Initial Commit

2026-03-17 10:24:08 +00:00 · 2025-01-09 09:23:56 +01:00
commit 52fb7af753
115 changed files with 54312 additions and 0 deletions
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -0,0 +1,14 @@
+version: 2
+updates:
+  - package-ecosystem: "cargo"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+  - package-ecosystem: "gradle"
+    directory: "/bindings/kotlin"
+    schedule:
+      interval: "weekly"
--- a/.github/workflows/cargo_publish.yml
+++ b/.github/workflows/cargo_publish.yml
@@ -0,0 +1,53 @@
+name: Cargo Publish
+
+permissions:
+  pull-requests: write
+  contents: write
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+
+  # Release unpublished packages.
+  release-plz-release:
+    name: Release-plz release
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+      - name: Run release-plz
+        uses: release-plz/action@v0.5
+        with:
+          command: release
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          CARGO_REGISTRY_TOKEN: ${{ secrets.CARGO_REGISTRY_TOKEN }}
+
+  # Create a PR with the new versions and changelog, preparing the next release.
+  release-plz-pr:
+    name: Release-plz PR
+    runs-on: ubuntu-latest
+    concurrency:
+      group: release-plz-${{ github.ref }}
+      cancel-in-progress: false
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+      - name: Run release-plz
+        uses: release-plz/action@v0.5
+        with:
+          command: release-pr
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          CARGO_REGISTRY_TOKEN: ${{ secrets.CARGO_REGISTRY_TOKEN }}
--- a/.github/workflows/pr.yml
+++ b/.github/workflows/pr.yml
@@ -0,0 +1,95 @@
+name: CI
+
+on:
+  pull_request:
+    branches:
+      - main
+
+
+jobs:
+  test-suite:
+    name: Run Test Suite
+    strategy:
+      matrix:
+        include:
+          - os: ubuntu-latest
+            target: x86_64-unknown-linux-gnu
+          - os: ubuntu-latest
+            target: aarch64-unknown-linux-gnu
+          - os: windows-latest
+            target: x86_64-pc-windows-msvc
+          - os: macos-13 # x86
+            target: x86_64-apple-darwin
+          - os: macos-14 # M1
+            target: aarch64-apple-darwin
+    runs-on: ${{ matrix.os }}
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Test library
+        uses: houseabsolute/actions-rust-cross@v1
+        with:
+          command: 'test'
+          target: ${{ matrix.target }}
+          args: "--all-features --workspace"
+
+  check-format:
+    name: Check formatting
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Install Rust toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: 1.83.0
+          profile: minimal
+          override: true
+          components: rustfmt
+      - uses: Swatinem/rust-cache@v2
+      - name: Check formatting
+        uses: actions-rs/cargo@v1
+        with:
+          command: fmt
+          args: --all -- --check
+
+  clippy:
+    name: Clippy
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Install Rust toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: 1.83.0
+          profile: minimal
+          override: true
+          components: clippy
+      - uses: Swatinem/rust-cache@v2
+      - name: Clippy check
+        uses: actions-rs/cargo@v1
+        with:
+          command: clippy
+          args: --all-targets --all-features --workspace -- -D warnings
+
+  docs:
+    name: Docs
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Install Rust toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: 1.83.0
+          profile: minimal
+          override: true
+      - uses: Swatinem/rust-cache@v2
+      - name: Check documentation
+        env:
+          RUSTDOCFLAGS: -D warnings
+        uses: actions-rs/cargo@v1
+        with:
+          command: doc
+          args: --no-deps --document-private-items --all-features --workspace --examples
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -0,0 +1,107 @@
+on:
+  push:
+    tags:
+      - 'v*.*.*'
+permissions:
+  contents: write # write to release artifacts
+jobs:
+  build-shared-library:
+    strategy:
+      matrix:
+        include:
+          - os: ubuntu-latest
+            target: x86_64-unknown-linux-gnu
+          - os: ubuntu-latest
+            target: aarch64-unknown-linux-gnu
+          - os: windows-latest
+            target: x86_64-pc-windows-msvc
+          - os: macos-13 # x86
+            target: x86_64-apple-darwin
+          - os: macos-14 # M1
+            target: aarch64-apple-darwin
+    runs-on: ${{ matrix.os }}
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Build library
+        uses: houseabsolute/actions-rust-cross@v1
+        with:
+          command: 'both' # test and build
+          target: ${{ matrix.target }}
+          args: "--locked --release"
+      - name: Upload library
+        uses: actions/upload-artifact@v4
+        with:
+          name: library-${{ matrix.target }}
+          path: |
+            target/${{ matrix.target }}/release/einvoice.dll
+            target/${{ matrix.target }}/release/libeinvoice.dylib
+            target/${{ matrix.target }}/release/libeinvoice.so
+      - name: Upload uniffi-bindgen executable
+        uses: actions/upload-artifact@v4
+        if: ${{ matrix.target == 'x86_64-unknown-linux-gnu' }}
+        with:
+          name: bindgen-${{ matrix.target }}
+          path: 'target/${{ matrix.target }}/release/uniffi-bindgen'
+  build-kotlin-bindings:
+    runs-on: ubuntu-latest
+    needs: build-shared-library
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Download artifacts
+        uses: actions/download-artifact@v4
+        with:
+          path: bindings/kotlin/build/native
+      - name: move library files
+        run: |
+          mkdir -p bindings/kotlin/src/main/resources/darwin-aarch64
+          mkdir -p bindings/kotlin/src/main/resources/linux-aarch64
+          mkdir -p bindings/kotlin/src/main/resources/win32-x86-64
+          mkdir -p bindings/kotlin/src/main/resources/darwin-x86-64
+          mkdir -p bindings/kotlin/src/main/resources/linux-x86-64
+          cp -r bindings/kotlin/build/native/library-aarch64-apple-darwin/*  bindings/kotlin/src/main/resources/darwin-aarch64
+          cp -r  bindings/kotlin/build/native/library-aarch64-unknown-linux-gnu/*  bindings/kotlin/src/main/resources/linux-aarch64
+          cp -r  bindings/kotlin/build/native/library-x86_64-pc-windows-msvc/* bindings/kotlin/src/main/resources/win32-x86-64
+          cp -r  bindings/kotlin/build/native/library-x86_64-apple-darwin/*  bindings/kotlin/src/main/resources/darwin-x86-64
+          cp -r  bindings/kotlin/build/native/library-x86_64-unknown-linux-gnu/* bindings/kotlin/src/main/resources/linux-x86-64
+          mkdir -p target/release
+          cp bindings/kotlin/src/main/resources/linux-x86-64/* -r target/release/
+          cp bindings/kotlin/build/native/bindgen-x86_64-unknown-linux-gnu/* -r target/release/
+          ls -R bindings/kotlin/src/main/resources
+      - name: Setup Gradle
+        uses: gradle/actions/setup-gradle@v4
+      - name: Build with Gradle
+        run: |
+          chmod +x target/release/uniffi-bindgen
+          cd bindings/kotlin
+          ./gradlew build --stacktrace --info
+      - name : Upload artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: kotlin-binding
+          path: bindings/kotlin/build/libs
+  upload-to-release:
+      name: Upload to artifacts release
+      runs-on: ubuntu-latest
+      needs: [ build-kotlin-bindings ]
+      steps:
+        - name: Download artifacts
+          uses: actions/download-artifact@v4
+          with:
+            path: dist
+        - name: Flatten files
+          run: |
+            for dir in dist/*; do
+              for file in $dir/*; do
+                mv $file $dir-$(basename $file)
+              done
+              rm -r $dir
+            done
+        - name: Publish release assets
+          uses: softprops/action-gh-release@v2
+          with:
+            files: |
+              dist/*
+            fail_on_unmatched_files: true
+
--- a/.gitignore
+++ b/.gitignore
@@ -0,0 +1,2 @@
+/target
+.idea
--- a/Cargo.lock
+++ b/Cargo.lock
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -0,0 +1,31 @@
+[package]
+name = "einvoice"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+yaserde = { git = "https://github.com/BSchneppe/yaserde.git" , branch = "feat/nested"}
+yaserde_derive ={ git = "https://github.com/BSchneppe/yaserde.git" , branch = "feat/nested"}
+thiserror = "2.0.11"
+rayon = "1.10.0"
+uniffi = { version = "0.28.3", features = ["cli"] }
+chrono = "0.4.39"
+rust_decimal = { version = "1.36.0",features = ["c-repr"] }
+lopdf = "=0.34.0"
+
+[dev-dependencies]
+rstest = "0.24.0"
+xmltree = { version = "0.11.0" ,features = ["attribute-order"]}
+regex = "1.11.1"
+
+
+[build-dependencies]
+regex = "1.11.1"
+
+[lib]
+crate-type = ["lib","cdylib"]
+[[bin]]
+name = "uniffi-bindgen"
+path = "uniffi_bindgen.rs"
+
+
--- a/7
+++ b/7
@@ -0,0 +1,7 @@
+Copyright 2024 Benedikt Schneppe
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
--- a/README.md
+++ b/README.md
@@ -0,0 +1,64 @@
+
+# einvoice-rs
+
+The goal of this project is to implement
+- XML parsing of CII and UBL e-invoices
+- Validation / [Parsing](https://lexi-lambda.github.io/blog/2019/11/05/parse-don-t-validate/) of CII and UBL e-invoices
+- Generation of XML for CII and UBL e-invoices
+- visualization of CII and UBL e-invoices
+- generation of PDFs for CII  e-invoices (zugferd)
+- parsing of XMls embedded in PDFs (zugferd)
+- provide cross-language and platform bindings for the above
+
+> [!CAUTION]
+> Early stage of development, not ready for production use
+
+
+## License
+
+This project is licensed under the terms described in the [LICENSE](LICENSE) file (MIT).
+
+## Features
+
+- Serialization and Deserialization of CII and UBL XML invoices (EN 16931)
+- Java Binding based on kotlin works for jre 8 and above
+
+
+## Roadmap
+
+- Implement validation for Invoices
+- Clean-Up generated files according to xsds / use stricter types
+- add more language bindings
+
+
+## Running Tests
+
+To run tests, run the following command
+
+```bash
+  cargo test  
+```
+This will validate that we can deserialize and serialize all tests in the [xrechnung testsuite](https://github.com/itplr-kosit/xrechnung-testsuite/tree/master/src/test )
+
+## Examples
+### Java
+```java
+import com.schneppe.einvoice.Invoice;
+import com.schneppe.einvoice.EinvoiceKt;
+
+String xml = new String(Files.readAllBytes(path));
+Invoice invoice = EinvoiceKt.validateXRechnung(xml);
+```
+### Rust 
+
+see [examples](examples) for rust examples
+
+
+## Authors
+
+- [Benedikt Schneppe](https://www.github.com/bschneppe)
+
+
+
+
+
--- a/bindings/kotlin/.gitignore
+++ b/bindings/kotlin/.gitignore
@@ -0,0 +1,4 @@
+/.gradle/
+/.idea/
+/.kotlin/
+/build/
--- a/bindings/kotlin/build.gradle.kts
+++ b/bindings/kotlin/build.gradle.kts
@@ -0,0 +1,107 @@
+import com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+
+version = versionFromCargo("../../Cargo.toml")
+
+plugins {
+    kotlin("jvm") version "2.1.0"
+    id("com.github.johnrengelman.shadow") version "8.1.1"
+
+}
+kotlin {
+    compilerOptions {
+        jvmTarget.set(JvmTarget.JVM_1_8)
+    }
+}
+java {
+    sourceCompatibility = JavaVersion.VERSION_1_8
+    targetCompatibility = JavaVersion.VERSION_1_8
+}
+
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    val co_routines_version = "1.10.1"
+    implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:$co_routines_version")
+    val jna_version = "5.16.0";
+    implementation("net.java.dev.jna:jna:$jna_version")
+    val junit_version = "5.11.4"
+    testImplementation("org.junit.jupiter:junit-jupiter:$junit_version")
+}
+val nativeDir = layout.buildDirectory.dir("generated/sources/native").get().asFile.absolutePath
+
+tasks {
+    val generateUniFFIBindings by registering(Exec::class) {
+        group = "build"
+        description = "Generates UniFFI bindings for Kotlin."
+
+        workingDir = layout.projectDirectory.dir("../../target/release/").asFile
+
+        var libExtension = "dylib"
+        if (System.getProperty("os.name").lowercase().contains("linux")) {
+            libExtension = "so"
+        }
+
+        //generate the bindings
+        commandLine(
+            "./uniffi-bindgen",
+            "generate",
+            "--library",
+            "libeinvoice.${libExtension}",
+            "--language",
+            "kotlin",
+            "--out-dir",
+            nativeDir
+        )
+
+    }
+
+    val compileKotlin by getting {
+        dependsOn(generateUniFFIBindings)
+    }
+}
+
+tasks.processResources {
+    from("../../target/release") {
+        include("*.dylib")
+        into("darwin-aarch64")
+        duplicatesStrategy = DuplicatesStrategy.EXCLUDE
+    }
+    from("../../target/release") {
+        include("*.so")
+        into("linux-x86-64")
+        duplicatesStrategy = DuplicatesStrategy.EXCLUDE
+    }
+}
+
+tasks.withType<ShadowJar> {
+    archiveClassifier.set("") // Replace default "all" classifier
+    relocate("org.jetbrains.annotations", "com.schneppe.einvoice.annotations.jetbrains")
+    relocate("org.intellij.lang.annotations", "com.schneppe.einvoice.annotations.intellij")
+    relocate("kotlinx.coroutines", "com.schneppe.einvoice.coroutines")
+    relocate("kotlin", "com.schneppe.einvoice.kotlin")
+    mergeServiceFiles()
+}
+
+
+tasks.build {
+    dependsOn("shadowJar")
+}
+tasks.test {
+    useJUnitPlatform()
+}
+
+sourceSets {
+    val main by getting {
+        kotlin.srcDir(nativeDir)
+    }
+}
+
+fun versionFromCargo(s: String): String {
+    val file = File(s)
+    val version = file.readLines().find { it.startsWith("version") } ?: error("Version not found in Cargo.toml")
+    return version.split("=")[1].replace("\"", "").trim()
+}
--- a/bindings/kotlin/gradle/wrapper/gradle-wrapper.jar
+++ b/bindings/kotlin/gradle/wrapper/gradle-wrapper.jar
--- a/bindings/kotlin/gradle/wrapper/gradle-wrapper.properties
+++ b/bindings/kotlin/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.10-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
--- a/bindings/kotlin/gradlew
+++ b/bindings/kotlin/gradlew
@@ -0,0 +1,252 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s
+' "$PWD" ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"
--- a/bindings/kotlin/gradlew.bat
+++ b/bindings/kotlin/gradlew.bat
@@ -0,0 +1,94 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+@rem SPDX-License-Identifier: Apache-2.0
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
--- a/bindings/kotlin/settings.gradle.kts
+++ b/bindings/kotlin/settings.gradle.kts
@@ -0,0 +1 @@
+rootProject.name = "einvoice"
--- a/bindings/kotlin/src/test/java/com/schneppe/einvoice/ValidationTest.java
+++ b/bindings/kotlin/src/test/java/com/schneppe/einvoice/ValidationTest.java
@@ -0,0 +1,43 @@
+package com.schneppe.einvoice;
+
+
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertInstanceOf;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+
+class ValidationTest {
+
+    @Test
+    void validateInvoiceShouldBeValid() throws Exception {
+        Path path = Paths.get(this.getClass().getClassLoader().getResource("01.11a-INVOICE_ubl.xml").getPath());
+        String xml = new String(Files.readAllBytes(path));
+        InvoiceStandard invoiceStandard = EinvoiceKt.validateInvoice(xml);
+
+        assertInstanceOf(InvoiceStandard.Ubl.class, invoiceStandard);
+    }
+
+    @Test
+    void validateInvoiceShouldBeInvalid() throws Exception {
+        Path path = Paths.get(this.getClass().getClassLoader().getResource("no_customizationid_01.01_comprehensive_test_ubl.xml").getPath());
+        String xml = new String(Files.readAllBytes(path));
+
+        assertThrows(InvoiceException.class, () -> EinvoiceKt.validateInvoice(xml));
+    }
+
+    @Test
+    void validateInvoiceShouldBeValidCii() throws Exception {
+        Path path = Paths.get(this.getClass().getClassLoader().getResource("01.01_comprehensive_test_uncefact.xml").getPath());
+        String xml = new String(Files.readAllBytes(path));
+
+        InvoiceStandard invoiceStandard = EinvoiceKt.validateInvoice(xml);
+
+        assertInstanceOf(InvoiceStandard.Cii.class, invoiceStandard);
+
+    }
+}
--- a/bindings/kotlin/src/test/resources/01.01_comprehensive_test_uncefact.xml
+++ b/bindings/kotlin/src/test/resources/01.01_comprehensive_test_uncefact.xml
--- a/bindings/kotlin/src/test/resources/01.11a-INVOICE_ubl.xml
+++ b/bindings/kotlin/src/test/resources/01.11a-INVOICE_ubl.xml
@@ -0,0 +1,169 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ubl:Invoice xmlns:ubl="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2"
+             xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2"
+             xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2">
+    <cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</cbc:CustomizationID>
+    <cbc:ProfileID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</cbc:ProfileID>
+    <cbc:ID>Rechnungsnummer</cbc:ID>
+    <cbc:IssueDate>2016-02-23</cbc:IssueDate>
+    <cbc:DueDate>2016-03-08</cbc:DueDate>
+    <cbc:InvoiceTypeCode>380</cbc:InvoiceTypeCode>
+    <cbc:DocumentCurrencyCode>EUR</cbc:DocumentCurrencyCode>
+    <cbc:BuyerReference>04011000-12352-79</cbc:BuyerReference>
+    <cac:OrderReference>
+        <cbc:ID>Dummywert</cbc:ID>
+        <cbc:SalesOrderID>Auftragsnummer</cbc:SalesOrderID>
+    </cac:OrderReference>
+    <cac:AccountingSupplierParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">seller@email.de</cbc:EndpointID>
+            <cac:PartyName>
+                <cbc:Name>[Seller trading name]</cbc:Name>
+            </cac:PartyName>
+            <cac:PostalAddress>
+                <cbc:StreetName>[Seller address line 1]</cbc:StreetName>
+                <cbc:CityName>[Seller city]</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyTaxScheme>
+                <cbc:CompanyID>DE123456789</cbc:CompanyID>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:PartyTaxScheme>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>[Seller name]</cbc:RegistrationName>
+                <cbc:CompanyID>HRB 123</cbc:CompanyID>
+                <cbc:CompanyLegalForm>Amtsgericht […], Geschäftsführer: […], Sitz der Gesellschaft […], Aufsichtsratvorsitzender: […]</cbc:CompanyLegalForm>
+            </cac:PartyLegalEntity>
+            <cac:Contact>
+                <cbc:Name>Auskunft erteilt Ihnen</cbc:Name>
+                <cbc:Telephone>1234567890</cbc:Telephone>
+                <cbc:ElectronicMail>seller@test.de</cbc:ElectronicMail>
+            </cac:Contact>
+        </cac:Party>
+    </cac:AccountingSupplierParty>
+    <cac:AccountingCustomerParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">buyer@info.de</cbc:EndpointID>
+            <cac:PostalAddress>
+                <cbc:StreetName>[Buyer address line 1]</cbc:StreetName>
+                <cbc:CityName>[Buyer city]</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>[Buyer name]</cbc:RegistrationName>
+            </cac:PartyLegalEntity>
+        </cac:Party>
+    </cac:AccountingCustomerParty>
+    <cac:PaymentMeans>
+        <cbc:PaymentMeansCode>58</cbc:PaymentMeansCode>
+        <cac:PayeeFinancialAccount>
+            <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+            <cbc:ID>DE12500105170648489890</cbc:ID>
+        </cac:PayeeFinancialAccount>
+    </cac:PaymentMeans>
+    <cac:PaymentMeans>
+        <cbc:PaymentMeansCode>58</cbc:PaymentMeansCode>
+        <cac:PayeeFinancialAccount>
+            <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+            <cbc:ID>DE89370400440532013000</cbc:ID>
+        </cac:PayeeFinancialAccount>
+    </cac:PaymentMeans>
+    <cac:PaymentMeans>
+        <cbc:PaymentMeansCode>58</cbc:PaymentMeansCode>
+        <cac:PayeeFinancialAccount>
+            <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+            <cbc:ID>DE75512108001245126199</cbc:ID>
+        </cac:PayeeFinancialAccount>
+    </cac:PaymentMeans>
+    <cac:TaxTotal>
+        <cbc:TaxAmount currencyID="EUR">44.61</cbc:TaxAmount>
+        <cac:TaxSubtotal>
+            <cbc:TaxableAmount currencyID="EUR">234.77</cbc:TaxableAmount>
+            <cbc:TaxAmount currencyID="EUR">44.61</cbc:TaxAmount>
+            <cac:TaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:TaxCategory>
+        </cac:TaxSubtotal>
+    </cac:TaxTotal>
+    <cac:LegalMonetaryTotal>
+        <cbc:LineExtensionAmount currencyID="EUR">234.77</cbc:LineExtensionAmount>
+        <cbc:TaxExclusiveAmount currencyID="EUR">234.77</cbc:TaxExclusiveAmount>
+        <cbc:TaxInclusiveAmount currencyID="EUR">279.38</cbc:TaxInclusiveAmount>
+        <cbc:PayableAmount currencyID="EUR">279.38</cbc:PayableAmount>
+    </cac:LegalMonetaryTotal>
+    <cac:InvoiceLine>
+        <cbc:ID>0010</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">3</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">214.26</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Huawei E5573 Mobiler 4G Hotspot sw</cbc:Name>
+            <cac:SellersItemIdentification>
+                <cbc:ID>CON-1401888</cbc:ID>
+            </cac:SellersItemIdentification>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">71.42</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+    <cac:InvoiceLine>
+        <cbc:ID>0020</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">1</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">10.71</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Beschaffungspauschale</cbc:Name>
+            <cac:SellersItemIdentification>
+                <cbc:ID>51001</cbc:ID>
+            </cac:SellersItemIdentification>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">10.71</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+    <cac:InvoiceLine>
+        <cbc:ID>0030</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">1</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">9.8</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Lieferkosten</cbc:Name>
+            <cac:SellersItemIdentification>
+                <cbc:ID>51010</cbc:ID>
+            </cac:SellersItemIdentification>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">9.8</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+</ubl:Invoice>
--- a/bindings/kotlin/src/test/resources/no_customizationid_01.01_comprehensive_test_ubl.xml
+++ b/bindings/kotlin/src/test/resources/no_customizationid_01.01_comprehensive_test_ubl.xml
--- a/examples/invalid_cii.rs
+++ b/examples/invalid_cii.rs
@@ -0,0 +1,24 @@
+use einvoice::{validate_invoice, InvoiceError, InvoiceStandard};
+
+fn main() {
+    let xml = r#"
+<rsm:CrossIndustryInvoice xmlns:rsm="urn:un:unece:uncefact:data:standard:CrossIndustryInvoice:100"
+                          xmlns:ram="urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100"
+                          xmlns:qdt="urn:un:unece:uncefact:data:standard:QualifiedDataType:100"
+                          xmlns:udt="urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100">
+    <rsm:ExchangedDocumentContext>
+        <ram:BusinessProcessSpecifiedDocumentContextParameter>
+            <ram:ID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</ram:ID>
+        </ram:BusinessProcessSpecifiedDocumentContextParameter>
+        <ram:GuidelineSpecifiedDocumentContextParameter>
+            <ram:ID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</ram:ID>
+        </ram:GuidelineSpecifiedDocumentContextParameter>
+    </rsm:ExchangedDocumentContext>
+   </rsm:CrossIndustryInvoice> 
+"#;
+    let invalid_invoice: Result<InvoiceStandard, InvoiceError> = validate_invoice(xml);
+    match invalid_invoice {
+        Ok(_) => println!("Invoice is valid"),
+        Err(e) => println!("Invoice is invalid: {:?}", e),
+    }
+}
--- a/examples/invalid_ubl.rs
+++ b/examples/invalid_ubl.rs
@@ -0,0 +1,15 @@
+use einvoice::validate_invoice;
+use einvoice::{InvoiceError, InvoiceStandard};
+
+fn main() {
+    let xml = r#"
+<Invoice xmlns="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2" xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2" xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2">
+    <cbc:ID>123</cbc:ID>
+</Invoice>
+"#;
+    let invalid_invoice: Result<InvoiceStandard, InvoiceError> = validate_invoice(xml);
+    match invalid_invoice {
+        Ok(_) => println!("Invoice is valid"),
+        Err(e) => println!("Invoice is invalid: {:?}", e),
+    }
+}
--- a/src/cii/cii_business_rule_validator.rs
+++ b/src/cii/cii_business_rule_validator.rs
--- a/src/cii/cii_model.rs
+++ b/src/cii/cii_model.rs
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -0,0 +1,295 @@
+pub mod cii {
+    pub mod cii_business_rule_validator;
+    pub mod cii_model;
+}
+
+pub mod ubl {
+    pub mod ubl_business_rule_validator;
+    pub mod ubl_model;
+}
+
+use crate::cii::cii_business_rule_validator;
+use crate::ubl::ubl_business_rule_validator;
+use crate::ZugferdProfile::EN16931;
+pub use cii::cii_model::CrossIndustryInvoice;
+use lopdf::Document;
+use lopdf::Error;
+use lopdf::Object;
+use std::fmt::Debug;
+use std::io::{Read, Write};
+use std::sync::Arc;
+use thiserror::Error;
+pub use ubl::ubl_model::UblInvoice;
+use yaserde::__xml::attribute::OwnedAttribute;
+use yaserde::__xml::namespace::Namespace;
+use yaserde::de::Deserializer;
+use yaserde::ser::Serializer;
+use yaserde::{YaDeserialize, YaSerialize};
+
+uniffi::setup_scaffolding!();
+#[derive(Debug, uniffi::Error, Error)]
+pub enum InvoiceError {
+    #[error("Failed to parse XML")]
+    ParseError(String),
+    #[error("Failed to validate XML: {0}")]
+    ValidationError(String),
+    #[error("Failed to unwrap Arc")]
+    ArcError,
+}
+
+#[derive(Debug, Clone, uniffi::Record)]
+pub struct BusinessRuleViolation {
+    pub rule_id: String,
+    pub rule_text: String,
+}
+impl BusinessRuleViolation {
+    pub fn new(rule_id: &str, rule_text: &str) -> Self {
+        Self {
+            rule_id: rule_id.to_string(),
+            rule_text: rule_text.to_string(),
+        }
+    }
+}
+
+#[derive(Error, Debug, Clone, uniffi::Enum)]
+pub enum ValidationError {
+    #[error("Fatal: {0:?}")]
+    Fatal(BusinessRuleViolation),
+    #[error("Warning: {0:?}")]
+    Warning(BusinessRuleViolation),
+    #[error("Failed to concurrently execute: {0:?}")]
+    ConcurrencyError(String),
+}
+impl YaDeserialize for InvoiceStandard {
+    fn deserialize<R: Read>(reader: &mut Deserializer<R>) -> Result<Self, String> {
+        UblInvoice::deserialize(reader)
+            .map(InvoiceStandard::UBL)
+            .or_else(|_| CrossIndustryInvoice::deserialize(reader).map(InvoiceStandard::CII))
+    }
+}
+
+#[allow(clippy::large_enum_variant)]
+#[derive(uniffi::Enum)]
+pub enum InvoiceStandard {
+    UBL(UblInvoice),
+    CII(CrossIndustryInvoice),
+}
+
+impl YaSerialize for InvoiceStandard {
+    fn serialize<W: Write>(&self, writer: &mut Serializer<W>) -> Result<(), String> {
+        match self {
+            InvoiceStandard::UBL(invoice) => invoice.serialize(writer),
+            InvoiceStandard::CII(invoice) => invoice.serialize(writer),
+        }
+    }
+
+    fn serialize_attributes(
+        &self,
+        attributes: Vec<OwnedAttribute>,
+        namespace: Namespace,
+    ) -> Result<(Vec<OwnedAttribute>, Namespace), String> {
+        match self {
+            InvoiceStandard::UBL(invoice) => invoice.serialize_attributes(attributes, namespace),
+            InvoiceStandard::CII(invoice) => invoice.serialize_attributes(attributes, namespace),
+        }
+    }
+}
+/// Validate an invoice XML file
+/// # Arguments
+/// * `xml` - The XML content of the invoice
+/// # Returns
+/// * `InvoiceStandard` - The parsed invoice
+/// # Errors
+/// * `InvoiceError` - If the invoice is invalid
+#[uniffi::export]
+pub fn validate_invoice(xml: &str) -> Result<InvoiceStandard, InvoiceError> {
+    let invoice_standard: InvoiceStandard =
+        yaserde::de::from_str(xml).map_err(InvoiceError::ParseError)?;
+
+    match &invoice_standard {
+        InvoiceStandard::UBL(invoice) => {
+            let arc = Arc::new(invoice);
+            ubl_business_rule_validator::validate_invoice(arc).map_err(|e| {
+                InvoiceError::ValidationError(
+                    e.iter()
+                        .map(|e| e.to_string())
+                        .collect::<Vec<String>>()
+                        .join("\n"),
+                )
+            })?;
+        }
+        InvoiceStandard::CII(invoice) => {
+            let arc = Arc::new(invoice);
+            cii_business_rule_validator::validate_invoice(EN16931, arc).map_err(|e| {
+                InvoiceError::ValidationError(
+                    e.iter()
+                        .map(|e| e.to_string())
+                        .collect::<Vec<String>>()
+                        .join("\n"),
+                )
+            })?;
+        }
+    }
+
+    Ok(invoice_standard)
+}
+/// Validate a ZUGFeRD PDF file
+/// # Arguments
+/// * `file_path` - The path to the PDF file
+/// # Returns
+/// * `InvoiceStandard` - The parsed invoice
+/// # Errors
+/// * `InvoiceError` - If the invoice is invalid
+///
+/// This first extracts the embedded XML file from the PDF and then delegates to `validate_invoice`
+#[uniffi::export]
+pub fn validate_zugferd_pdf(file_path: &str) -> Result<InvoiceStandard, InvoiceError> {
+    let pdf_document =
+        Document::load(file_path).map_err(|e| InvoiceError::ParseError(e.to_string()))?;
+    match get_embedded_xml_file(&pdf_document) {
+        Ok(embedded_file) => {
+            if let Some((_file_name, content)) = embedded_file {
+                let xml_content = String::from_utf8(content)
+                    .map_err(|err| InvoiceError::ParseError(err.to_string()))?;
+                validate_invoice(&xml_content)
+            } else {
+                Err(InvoiceError::ParseError(
+                    "No embedded XML file found".to_string(),
+                ))
+            }
+        }
+        Err(e) => Err(InvoiceError::ParseError(e.to_string())),
+    }
+}
+
+fn get_embedded_xml_file(pdf: &Document) -> Result<Option<(String, Vec<u8>)>, Error> {
+    let root_ref = pdf.trailer.get(b"Root")?.as_reference()?;
+
+    let catalog = pdf.get_object(root_ref).and_then(|obj| obj.as_dict())?;
+
+    let names = catalog.get(b"Names")?;
+
+    let names_dict = match names {
+        Object::Dictionary(dict) => dict.clone(),
+        Object::Reference(obj_ref) => {
+            let dict_obj = pdf.get_object(*obj_ref).and_then(|obj| obj.as_dict())?;
+            dict_obj.clone()
+        }
+        _ => {
+            return Err(Error::DictKey);
+        }
+    };
+
+    names_dict.get(b"EmbeddedFiles")?;
+
+    let embedded_files_obj = names_dict.get(b"EmbeddedFiles")?;
+
+    let embedded_files_dict = match embedded_files_obj {
+        Object::Dictionary(dict) => dict.clone(),
+        Object::Reference(obj_ref) => pdf.get_object(*obj_ref)?.as_dict()?.clone(),
+        _ => return Err(Error::DictKey),
+    };
+
+    let names_array_obj = embedded_files_dict.get(b"Names")?;
+
+    let names_array = names_array_obj.as_array()?;
+
+    let mut idx = 0;
+    while idx < names_array.len() {
+        let file_name_obj = &names_array[idx];
+        let file_spec_obj = &names_array[idx + 1];
+        idx += 2;
+
+        let file_name = match file_name_obj {
+            Object::String(bytes, _) => String::from_utf8_lossy(bytes).to_string(),
+            _ => continue, // Not a valid file name
+        };
+
+        if !file_name.to_lowercase().ends_with(".xml") {
+            continue;
+        }
+
+        let file_spec_dict = match file_spec_obj {
+            Object::Reference(r) => pdf.get_object(*r)?.as_dict()?.clone(),
+            Object::Dictionary(d) => d.clone(),
+            _ => continue, // Not a valid file spec
+        };
+
+        let ef_obj = file_spec_dict.get(b"EF")?;
+
+        let ef_dict = match ef_obj {
+            Object::Reference(r) => pdf.get_object(*r)?.as_dict()?.clone(),
+            Object::Dictionary(d) => d.clone(),
+            _ => continue,
+        };
+
+        let file_stream_ref = ef_dict.get(b"F")?;
+
+        let file_stream = match file_stream_ref {
+            Object::Reference(r) => pdf.get_object(*r)?,
+            Object::Stream(s) => &Object::Stream(s.clone()),
+            _ => continue,
+        };
+
+        let file_bytes = match file_stream {
+            Object::Stream(ref stream) => stream.decompressed_content()?,
+            _ => continue,
+        };
+
+        return Ok(Some((file_name, file_bytes)));
+    }
+    Ok(None)
+}
+
+#[derive(uniffi::Enum)]
+// TODO: parse the profile based on the XML content
+pub enum ZugferdProfile {
+    Basic,
+    EN16931,
+}
+
+#[cfg(test)]
+mod tests {
+    use crate::{validate_invoice, InvoiceError, InvoiceStandard};
+
+    #[test]
+    fn it_works() {
+        let s = include_str!("../tests/inputs/ubl/01.01_comprehensive_test_ubl.xml");
+        let invoice_standard = validate_invoice(s).unwrap();
+        match invoice_standard {
+            InvoiceStandard::UBL(invoice) => {
+                assert!(invoice.cbc_id.is_some());
+            }
+            _ => panic!("Expected UBL invoice"),
+        }
+    }
+
+    #[test]
+    fn err_works() {
+        let s = include_str!(
+            "../tests/inputs/ubl/invalid/no_customizationid_01.01_comprehensive_test_ubl.xml"
+        );
+        let res = validate_invoice(s);
+        assert!(res.is_err());
+        match res {
+            Err(e) => {
+                assert!(matches!(e, InvoiceError::ValidationError(_)));
+            }
+            _ => panic!("Expected an error"),
+        }
+    }
+
+    #[test]
+    fn pdf_extraction_works() {
+        let invoice = crate::validate_zugferd_pdf(
+            "./tests/inputs/zugferd/EXTENDED_Projektabschlussrechnung.pdf",
+        )
+        .unwrap();
+        match invoice {
+            InvoiceStandard::CII(invoice) => {
+                assert!(invoice.rsm_exchanged_document.is_some());
+            }
+            _ => panic!("Expected CII invoice"),
+        }
+    }
+}
--- a/src/ubl/ubl_business_rule_validator.rs
+++ b/src/ubl/ubl_business_rule_validator.rs
--- a/src/ubl/ubl_model.rs
+++ b/src/ubl/ubl_model.rs
--- a/tests/inputs/cii/01.01_comprehensive_test_uncefact.xml
+++ b/tests/inputs/cii/01.01_comprehensive_test_uncefact.xml
--- a/tests/inputs/cii/01.01a-INVOICE_uncefact.xml
+++ b/tests/inputs/cii/01.01a-INVOICE_uncefact.xml
@@ -0,0 +1,171 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<rsm:CrossIndustryInvoice xmlns:rsm="urn:un:unece:uncefact:data:standard:CrossIndustryInvoice:100"
+                          xmlns:ram="urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100"
+                          xmlns:qdt="urn:un:unece:uncefact:data:standard:QualifiedDataType:100"
+                          xmlns:udt="urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100">
+    <rsm:ExchangedDocumentContext>
+        <ram:BusinessProcessSpecifiedDocumentContextParameter>
+            <ram:ID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</ram:ID>
+        </ram:BusinessProcessSpecifiedDocumentContextParameter>
+        <ram:GuidelineSpecifiedDocumentContextParameter>
+            <ram:ID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</ram:ID>
+        </ram:GuidelineSpecifiedDocumentContextParameter>
+    </rsm:ExchangedDocumentContext>
+    <rsm:ExchangedDocument>
+        <ram:ID>123456XX</ram:ID>
+        <ram:TypeCode>380</ram:TypeCode>
+        <ram:IssueDateTime>
+            <udt:DateTimeString format="102">20160404</udt:DateTimeString>
+        </ram:IssueDateTime>
+        <ram:IncludedNote>
+            <ram:Content>Es gelten unsere Allgem. Geschäftsbedingungen, die Sie unter […] finden.</ram:Content>
+            <ram:SubjectCode>ADU</ram:SubjectCode>
+        </ram:IncludedNote>
+    </rsm:ExchangedDocument>
+    <rsm:SupplyChainTradeTransaction>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>Zeitschrift [...]</ram:LineID>
+                <ram:IncludedNote>
+                    <ram:Content>Die letzte Lieferung im Rahmen des abgerechneten Abonnements erfolgt in 12/2016 Lieferung erfolgt / erfolgte direkt vom Verlag</ram:Content>
+                </ram:IncludedNote>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:SellerAssignedID>246</ram:SellerAssignedID>
+                <ram:Name>Zeitschrift [...]</ram:Name>
+                <ram:Description>Zeitschrift Inland</ram:Description>
+                <ram:DesignatedProductClassification>
+                    <ram:ClassCode listID="IB">0721-880X</ram:ClassCode>
+                </ram:DesignatedProductClassification>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:BuyerOrderReferencedDocument>
+                    <ram:LineID>6171175.1</ram:LineID>
+                </ram:BuyerOrderReferencedDocument>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>288.79</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">1</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>7</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:BillingSpecifiedPeriod>
+                    <ram:StartDateTime>
+                        <udt:DateTimeString format="102">20160101</udt:DateTimeString>
+                    </ram:StartDateTime>
+                    <ram:EndDateTime>
+                        <udt:DateTimeString format="102">20161231</udt:DateTimeString>
+                    </ram:EndDateTime>
+                </ram:BillingSpecifiedPeriod>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>288.79</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>Porto + Versandkosten</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:Name>Porto + Versandkosten</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>26.07</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">1</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>7</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>26.07</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:ApplicableHeaderTradeAgreement>
+            <ram:BuyerReference>04011000-12345-03</ram:BuyerReference>
+            <ram:SellerTradeParty>
+                <ram:Name>[Seller name]</ram:Name>
+                <ram:Description>123/456/7890, HRA-Eintrag in […]</ram:Description>
+                <ram:SpecifiedLegalOrganization>
+                    <ram:ID>[HRA-Eintrag]</ram:ID>
+                    <ram:TradingBusinessName>[Seller trading name]</ram:TradingBusinessName>
+                </ram:SpecifiedLegalOrganization>
+                <ram:DefinedTradeContact>
+                    <ram:PersonName>nicht vorhanden</ram:PersonName>
+                    <ram:TelephoneUniversalCommunication>
+                        <ram:CompleteNumber>+49 1234-5678</ram:CompleteNumber>
+                    </ram:TelephoneUniversalCommunication>
+                    <ram:EmailURIUniversalCommunication>
+                        <ram:URIID>seller@email.de</ram:URIID>
+                    </ram:EmailURIUniversalCommunication>
+                </ram:DefinedTradeContact>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:LineOne>[Seller address line 1]</ram:LineOne>
+                    <ram:CityName>[Seller city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">seller@email.de</ram:URIID>
+                </ram:URIUniversalCommunication>
+                <ram:SpecifiedTaxRegistration>
+                    <ram:ID schemeID="VA">DE 123456789</ram:ID>
+                </ram:SpecifiedTaxRegistration>
+            </ram:SellerTradeParty>
+            <ram:BuyerTradeParty>
+                <ram:ID>[Buyer identifier]</ram:ID>
+                <ram:Name>[Buyer name]</ram:Name>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:LineOne>[Buyer address line 1]</ram:LineOne>
+                    <ram:CityName>[Buyer city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>                
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">buyer@info.de</ram:URIID>
+                </ram:URIUniversalCommunication>                
+            </ram:BuyerTradeParty>
+        </ram:ApplicableHeaderTradeAgreement>
+        <ram:ApplicableHeaderTradeDelivery/>
+        <ram:ApplicableHeaderTradeSettlement>
+            <ram:InvoiceCurrencyCode>EUR</ram:InvoiceCurrencyCode>
+            <ram:SpecifiedTradeSettlementPaymentMeans>
+                <ram:TypeCode>58</ram:TypeCode>
+                <ram:PayeePartyCreditorFinancialAccount>
+                    <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+                    <ram:IBANID>DE75512108001245126199</ram:IBANID>
+                </ram:PayeePartyCreditorFinancialAccount>
+            </ram:SpecifiedTradeSettlementPaymentMeans>
+            <ram:ApplicableTradeTax>
+                <ram:CalculatedAmount>22.04</ram:CalculatedAmount>
+                <ram:TypeCode>VAT</ram:TypeCode>
+                <ram:BasisAmount>314.86</ram:BasisAmount>
+                <ram:CategoryCode>S</ram:CategoryCode>
+                <ram:RateApplicablePercent>7</ram:RateApplicablePercent>
+            </ram:ApplicableTradeTax>
+            <ram:SpecifiedTradePaymentTerms>
+                <ram:Description>Zahlbar sofort ohne Abzug.</ram:Description>
+            </ram:SpecifiedTradePaymentTerms>
+            <ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+                <ram:LineTotalAmount>314.86</ram:LineTotalAmount>
+                <ram:TaxBasisTotalAmount>314.86</ram:TaxBasisTotalAmount>
+                <ram:TaxTotalAmount currencyID="EUR">22.04</ram:TaxTotalAmount>
+                <ram:GrandTotalAmount>336.9</ram:GrandTotalAmount>
+                <ram:DuePayableAmount>336.9</ram:DuePayableAmount>
+            </ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+        </ram:ApplicableHeaderTradeSettlement>
+    </rsm:SupplyChainTradeTransaction>
+</rsm:CrossIndustryInvoice>
--- a/tests/inputs/cii/01.02_comprehensive_test_uncefact.xml
+++ b/tests/inputs/cii/01.02_comprehensive_test_uncefact.xml
--- a/tests/inputs/cii/01.02a-INVOICE_uncefact.xml
+++ b/tests/inputs/cii/01.02a-INVOICE_uncefact.xml
@@ -0,0 +1,155 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<rsm:CrossIndustryInvoice xmlns:rsm="urn:un:unece:uncefact:data:standard:CrossIndustryInvoice:100"
+                          xmlns:ram="urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100"
+                          xmlns:qdt="urn:un:unece:uncefact:data:standard:QualifiedDataType:100"
+                          xmlns:udt="urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100">
+    <rsm:ExchangedDocumentContext>
+        <ram:BusinessProcessSpecifiedDocumentContextParameter>
+            <ram:ID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</ram:ID>
+        </ram:BusinessProcessSpecifiedDocumentContextParameter>
+        <ram:GuidelineSpecifiedDocumentContextParameter>
+            <ram:ID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</ram:ID>
+        </ram:GuidelineSpecifiedDocumentContextParameter>
+    </rsm:ExchangedDocumentContext>
+    <rsm:ExchangedDocument>
+        <ram:ID>123456</ram:ID>
+        <ram:TypeCode>380</ram:TypeCode>
+        <ram:IssueDateTime>
+            <udt:DateTimeString format="102">20160621</udt:DateTimeString>
+        </ram:IssueDateTime>
+        <ram:IncludedNote>
+            <ram:Content>Bei Fragen zu Ihrer Rechnung wenden Sie sich bitte an unseren Kundenserivce. Sie erreichen uns per Email: […], Tel.: […] oder Fax: […]</ram:Content>
+            <ram:SubjectCode>ADU</ram:SubjectCode>
+        </ram:IncludedNote>
+        <ram:IncludedNote>
+            <ram:Content>Die Lieferung erfolgt aufgrund der AGB […] erhältlich unter […]. Auf Wunsch senden wir sie auch zu.</ram:Content>
+            <ram:SubjectCode>ADU</ram:SubjectCode>
+        </ram:IncludedNote>
+        <ram:IncludedNote>
+            <ram:Content>Hinweis gemäß § 33 BDSG: Kundendaten werden gespeichert.</ram:Content>
+            <ram:SubjectCode>ADU</ram:SubjectCode>
+        </ram:IncludedNote>
+        <ram:IncludedNote>
+            <ram:Content>Beschädigt eingehende Sendungen bitte sofort beim Spediteur bzw. Paketdienstleister reklamieren. Genehmigte Rücksendungen schicken Sie bitte mit den Unterlagen an: […]</ram:Content>
+            <ram:SubjectCode>ADU</ram:SubjectCode>
+        </ram:IncludedNote>
+    </rsm:ExchangedDocument>
+    <rsm:SupplyChainTradeTransaction>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>SZ300540</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:SellerAssignedID>SZ300540</ram:SellerAssignedID>
+                <ram:Name>Denk doch, wie du willst</ram:Name>
+                <ram:Description>Einblicke v. Deutschlands wicht. Ökonomen</ram:Description>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>11.78</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">1</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>7</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>11.78</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:ApplicableHeaderTradeAgreement>
+            <ram:BuyerReference>04011000-12346-97</ram:BuyerReference>
+            <ram:SellerTradeParty>
+                <ram:Name>[Seller name]</ram:Name>
+                <ram:Description>Geschäftsführer: […], Sitz der GmbH ist […], Amtsgericht […]</ram:Description>
+                <ram:SpecifiedLegalOrganization>
+                    <ram:ID>[HRB-Eintrag]</ram:ID>
+                    <ram:TradingBusinessName>[Seller trading name]</ram:TradingBusinessName>
+                </ram:SpecifiedLegalOrganization>
+                <ram:DefinedTradeContact>
+                    <ram:PersonName>-</ram:PersonName>
+                    <ram:TelephoneUniversalCommunication>
+                        <ram:CompleteNumber>[012-3456789]</ram:CompleteNumber>
+                    </ram:TelephoneUniversalCommunication>
+                    <ram:EmailURIUniversalCommunication>
+                        <ram:URIID>Seller@email.de</ram:URIID>
+                    </ram:EmailURIUniversalCommunication>
+                </ram:DefinedTradeContact>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:LineOne>[Seller address line 1]</ram:LineOne>
+                    <ram:CityName>[Seller city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">seller@email.de</ram:URIID>
+                </ram:URIUniversalCommunication>
+                <ram:SpecifiedTaxRegistration>
+                    <ram:ID schemeID="VA">DE123456789</ram:ID>
+                </ram:SpecifiedTaxRegistration>
+            </ram:SellerTradeParty>
+            <ram:BuyerTradeParty>
+                <ram:ID>BI12345678</ram:ID>
+                <ram:Name>[Buyer name]</ram:Name>
+                <ram:DefinedTradeContact>
+                    <ram:PersonName>[Buyer contact person]</ram:PersonName>
+                </ram:DefinedTradeContact>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:LineOne>[Buyer address line 1]</ram:LineOne>
+                    <ram:CityName>[Buyer city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">buyer@info.de</ram:URIID>
+                </ram:URIUniversalCommunication>
+            </ram:BuyerTradeParty>
+            <ram:SellerOrderReferencedDocument>
+                <ram:IssuerAssignedID>SO12345678</ram:IssuerAssignedID>
+            </ram:SellerOrderReferencedDocument>
+        </ram:ApplicableHeaderTradeAgreement>
+        <ram:ApplicableHeaderTradeDelivery>
+            <ram:ActualDeliverySupplyChainEvent>
+                <ram:OccurrenceDateTime>
+                    <udt:DateTimeString format="102">20160621</udt:DateTimeString>
+                </ram:OccurrenceDateTime>
+            </ram:ActualDeliverySupplyChainEvent>
+        </ram:ApplicableHeaderTradeDelivery>
+        <ram:ApplicableHeaderTradeSettlement>            
+            <ram:InvoiceCurrencyCode>EUR</ram:InvoiceCurrencyCode>
+            <ram:PayeeTradeParty>
+                <ram:Name>VSB - Verlagsservice Braunschweig GmbH</ram:Name>
+            </ram:PayeeTradeParty>
+            <ram:SpecifiedTradeSettlementPaymentMeans>
+                <ram:TypeCode>58</ram:TypeCode>
+                <ram:PayeePartyCreditorFinancialAccount>
+                    <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+                    <ram:IBANID>DE75512108001245126199</ram:IBANID>
+                </ram:PayeePartyCreditorFinancialAccount>
+            </ram:SpecifiedTradeSettlementPaymentMeans>
+            <ram:ApplicableTradeTax>
+                <ram:CalculatedAmount>0.82</ram:CalculatedAmount>
+                <ram:TypeCode>VAT</ram:TypeCode>
+                <ram:BasisAmount>11.78</ram:BasisAmount>
+                <ram:CategoryCode>S</ram:CategoryCode>
+                <ram:RateApplicablePercent>7</ram:RateApplicablePercent>
+            </ram:ApplicableTradeTax>
+            <ram:SpecifiedTradePaymentTerms>
+                <ram:Description>Bitte überweisen Sie den Betrag innerhalb von 14 Tagen auf unten stehendes Konto. Das Rechnungsdatum entspricht dem Versanddatum.</ram:Description>
+            </ram:SpecifiedTradePaymentTerms>
+            <ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+                <ram:LineTotalAmount>11.78</ram:LineTotalAmount>
+                <ram:TaxBasisTotalAmount>11.78</ram:TaxBasisTotalAmount>
+                <ram:TaxTotalAmount currencyID="EUR">0.82</ram:TaxTotalAmount>
+                <ram:GrandTotalAmount>12.6</ram:GrandTotalAmount>
+                <ram:DuePayableAmount>12.6</ram:DuePayableAmount>
+            </ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+        </ram:ApplicableHeaderTradeSettlement>
+    </rsm:SupplyChainTradeTransaction>
+</rsm:CrossIndustryInvoice>
--- a/tests/inputs/cii/01.03_comprehensive_test_uncefact.xml
+++ b/tests/inputs/cii/01.03_comprehensive_test_uncefact.xml
--- a/tests/inputs/cii/01.03a-INVOICE_uncefact.xml
+++ b/tests/inputs/cii/01.03a-INVOICE_uncefact.xml
@@ -0,0 +1,174 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<rsm:CrossIndustryInvoice xmlns:rsm="urn:un:unece:uncefact:data:standard:CrossIndustryInvoice:100"
+                          xmlns:ram="urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100"
+                          xmlns:qdt="urn:un:unece:uncefact:data:standard:QualifiedDataType:100"
+                          xmlns:udt="urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100">
+    <rsm:ExchangedDocumentContext>
+        <ram:BusinessProcessSpecifiedDocumentContextParameter>
+            <ram:ID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</ram:ID>
+        </ram:BusinessProcessSpecifiedDocumentContextParameter>
+        <ram:GuidelineSpecifiedDocumentContextParameter>
+            <ram:ID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</ram:ID>
+        </ram:GuidelineSpecifiedDocumentContextParameter>
+    </rsm:ExchangedDocumentContext>
+    <rsm:ExchangedDocument>
+        <ram:ID>RR123456</ram:ID>
+        <ram:TypeCode>380</ram:TypeCode>
+        <ram:IssueDateTime>
+            <udt:DateTimeString format="102">20160624</udt:DateTimeString>
+        </ram:IssueDateTime>
+        <ram:IncludedNote>
+            <ram:Content>Bei Zahlung bitte unbedingt angeben: […]</ram:Content>
+            <ram:SubjectCode>ADU</ram:SubjectCode>
+        </ram:IncludedNote>
+        <ram:IncludedNote>
+            <ram:Content>Die Lieferung erfolgte im Monat 06/2016. Die nächsten Ausgaben werden zum jeweiligen Erscheinungstermin ausgeliefert.</ram:Content>
+            <ram:SubjectCode>ADU</ram:SubjectCode>
+        </ram:IncludedNote>
+        <ram:IncludedNote>
+            <ram:Content>Informationen zum Bankeinzug, einer Adressänderung und vieles mehr finden Sie auch in unseren FAQ.</ram:Content>
+            <ram:SubjectCode>ADU</ram:SubjectCode>
+        </ram:IncludedNote>
+    </rsm:ExchangedDocument>
+    <rsm:SupplyChainTradeTransaction>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>558490000</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:SellerAssignedID>55849000</ram:SellerAssignedID>
+                <ram:Name>Deutsches Verwaltungsblatt</ram:Name>
+                <ram:Description>Heft 13 2016 bis 24 2016</ram:Description>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>152.34</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">1</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>7</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>152.34</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>Versandkosten</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:Name>Versandkosten</ram:Name>
+                <ram:Description>Abonnement-Nummer […]</ram:Description>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>17.94</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">1</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>7</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>17.94</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:ApplicableHeaderTradeAgreement>
+            <ram:BuyerReference>04011000-12347-94</ram:BuyerReference>
+            <ram:SellerTradeParty>
+                <ram:Name>[Seller name]</ram:Name>
+                <ram:Description>Geschäftsführer: […] (Vorsitz), […], Amtsgericht […]</ram:Description>
+                <ram:SpecifiedLegalOrganization>
+                    <ram:ID>HRB 12345</ram:ID>
+                    <ram:TradingBusinessName>[Seller trading name]</ram:TradingBusinessName>
+                </ram:SpecifiedLegalOrganization>
+                <ram:DefinedTradeContact>
+                    <ram:PersonName>Kundenservice</ram:PersonName>
+                    <ram:TelephoneUniversalCommunication>
+                        <ram:CompleteNumber>012-3456789</ram:CompleteNumber>
+                    </ram:TelephoneUniversalCommunication>
+                    <ram:EmailURIUniversalCommunication>
+                        <ram:URIID>info@service.de</ram:URIID>
+                    </ram:EmailURIUniversalCommunication>
+                </ram:DefinedTradeContact>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:LineOne>[Seller address line 1]</ram:LineOne>
+                    <ram:CityName>[Seller city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">seller@email.de</ram:URIID>
+                </ram:URIUniversalCommunication>
+                <ram:SpecifiedTaxRegistration>
+                    <ram:ID schemeID="VA">DE123456789</ram:ID>
+                </ram:SpecifiedTaxRegistration>
+                <ram:SpecifiedTaxRegistration>
+                    <ram:ID schemeID="FC">123/4567/8901</ram:ID>
+                </ram:SpecifiedTaxRegistration>
+            </ram:SellerTradeParty>
+            <ram:BuyerTradeParty>
+                <ram:ID>BI123456</ram:ID>
+                <ram:Name>[Buyer name]</ram:Name>
+                <ram:DefinedTradeContact>
+                    <ram:PersonName>Pressestelle</ram:PersonName>
+                </ram:DefinedTradeContact>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:LineOne>[Buyer address line 1]</ram:LineOne>
+                    <ram:LineTwo>[Buyer address line 2]</ram:LineTwo>
+                    <ram:LineThree>[Buyer address line 3]</ram:LineThree>
+                    <ram:CityName>[Buyer city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">buyer@info.de</ram:URIID>
+                </ram:URIUniversalCommunication>
+            </ram:BuyerTradeParty>
+            <ram:ContractReferencedDocument>
+                <ram:IssuerAssignedID>CR987654</ram:IssuerAssignedID>
+            </ram:ContractReferencedDocument>
+        </ram:ApplicableHeaderTradeAgreement>
+        <ram:ApplicableHeaderTradeDelivery/>
+        <ram:ApplicableHeaderTradeSettlement>
+            <ram:InvoiceCurrencyCode>EUR</ram:InvoiceCurrencyCode>
+            <ram:SpecifiedTradeSettlementPaymentMeans>
+                <ram:TypeCode>58</ram:TypeCode>
+                <ram:PayeePartyCreditorFinancialAccount>
+                     <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+                    <ram:IBANID>DE75512108001245126199</ram:IBANID>
+                </ram:PayeePartyCreditorFinancialAccount>
+            </ram:SpecifiedTradeSettlementPaymentMeans>
+            <ram:ApplicableTradeTax>
+                <ram:CalculatedAmount>11.92</ram:CalculatedAmount>
+                <ram:TypeCode>VAT</ram:TypeCode>
+                <ram:BasisAmount>170.28</ram:BasisAmount>
+                <ram:CategoryCode>S</ram:CategoryCode>
+                <ram:RateApplicablePercent>7</ram:RateApplicablePercent>
+            </ram:ApplicableTradeTax>
+            <ram:SpecifiedTradePaymentTerms>
+                <ram:Description>Fällig sofort, ohne Abzug</ram:Description>
+            </ram:SpecifiedTradePaymentTerms>
+            <ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+                <ram:LineTotalAmount>170.28</ram:LineTotalAmount>
+                <ram:TaxBasisTotalAmount>170.28</ram:TaxBasisTotalAmount>
+                <ram:TaxTotalAmount currencyID="EUR">11.92</ram:TaxTotalAmount>
+                <ram:GrandTotalAmount>182.2</ram:GrandTotalAmount>
+                <ram:DuePayableAmount>182.2</ram:DuePayableAmount>
+            </ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+        </ram:ApplicableHeaderTradeSettlement>
+    </rsm:SupplyChainTradeTransaction>
+</rsm:CrossIndustryInvoice>
--- a/tests/inputs/cii/01.04_comprehensive_test_uncefact.xml
+++ b/tests/inputs/cii/01.04_comprehensive_test_uncefact.xml
--- a/tests/inputs/cii/01.04a-INVOICE_uncefact.xml
+++ b/tests/inputs/cii/01.04a-INVOICE_uncefact.xml
@@ -0,0 +1,131 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<rsm:CrossIndustryInvoice xmlns:rsm="urn:un:unece:uncefact:data:standard:CrossIndustryInvoice:100"
+                          xmlns:ram="urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100"
+                          xmlns:qdt="urn:un:unece:uncefact:data:standard:QualifiedDataType:100"
+                          xmlns:udt="urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100">
+    <rsm:ExchangedDocumentContext>
+        <ram:BusinessProcessSpecifiedDocumentContextParameter>
+            <ram:ID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</ram:ID>
+        </ram:BusinessProcessSpecifiedDocumentContextParameter>
+        <ram:GuidelineSpecifiedDocumentContextParameter>
+            <ram:ID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</ram:ID>
+        </ram:GuidelineSpecifiedDocumentContextParameter>
+    </rsm:ExchangedDocumentContext>
+    <rsm:ExchangedDocument>
+        <ram:ID>1234/78/901</ram:ID>
+        <ram:TypeCode>380</ram:TypeCode>
+        <ram:IssueDateTime>
+            <udt:DateTimeString format="102">20160616</udt:DateTimeString>
+        </ram:IssueDateTime>
+        <ram:IncludedNote>
+            <ram:Content>Diese Leistung ist umsatzsteuerbefreit nach § 4 Nr. 22a UStG.</ram:Content>
+            <ram:SubjectCode>ADU</ram:SubjectCode>
+        </ram:IncludedNote>
+    </rsm:ExchangedDocument>
+    <rsm:SupplyChainTradeTransaction>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>Teilnahmegebühr</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:Name>Teilnahmegebühr</ram:Name>
+                <ram:Description>Anmeldung von […]</ram:Description>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>120</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">1</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>O</ram:CategoryCode>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>120</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:ApplicableHeaderTradeAgreement>
+            <ram:BuyerReference>04011000-12348-91</ram:BuyerReference>
+            <ram:SellerTradeParty>
+                <ram:Name>[Seller name]</ram:Name>
+                <ram:Description>Vorstand: [...] (Vorsitzender), […] (Stellvertreterin), Dr. […] (Schatzmeister); Beirat: […] (Vorsitzender); Geschäftsführung: […], AG […], FA für Körperschaften […]</ram:Description>
+                <ram:SpecifiedLegalOrganization>
+                    <ram:ID>VR 12345 Nz</ram:ID>
+                    <ram:TradingBusinessName>[Seller trading name]</ram:TradingBusinessName>
+                </ram:SpecifiedLegalOrganization>
+                <ram:DefinedTradeContact>
+                    <ram:PersonName>[…]</ram:PersonName>
+                    <ram:TelephoneUniversalCommunication>
+                        <ram:CompleteNumber>+49 (0)12-345678-90</ram:CompleteNumber>
+                    </ram:TelephoneUniversalCommunication>
+                    <ram:EmailURIUniversalCommunication>
+                        <ram:URIID>mail@seller.eu</ram:URIID>
+                    </ram:EmailURIUniversalCommunication>
+                </ram:DefinedTradeContact>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:LineOne>[Seller address line 1]</ram:LineOne>
+                    <ram:LineTwo>[Seller address line 2]</ram:LineTwo>
+                    <ram:CityName>[Seller city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">seller@email.de</ram:URIID>
+                </ram:URIUniversalCommunication>
+                <ram:SpecifiedTaxRegistration>
+                    <ram:ID schemeID="FC">12/345/67890</ram:ID>
+                </ram:SpecifiedTaxRegistration>
+            </ram:SellerTradeParty>
+            <ram:BuyerTradeParty>
+                <ram:Name>[Buyer name]</ram:Name>
+                <ram:DefinedTradeContact>
+                    <ram:PersonName>[Buyer contact person]</ram:PersonName>
+                </ram:DefinedTradeContact>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:LineOne>[Buyer address line 1]</ram:LineOne>
+                    <ram:LineTwo>[Buyer address line 2]</ram:LineTwo>
+                    <ram:CityName>[Buyer city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">buyer@info.de</ram:URIID>
+                </ram:URIUniversalCommunication>
+            </ram:BuyerTradeParty>
+        </ram:ApplicableHeaderTradeAgreement>
+        <ram:ApplicableHeaderTradeDelivery/>
+        <ram:ApplicableHeaderTradeSettlement>
+            <ram:InvoiceCurrencyCode>EUR</ram:InvoiceCurrencyCode>
+            <ram:SpecifiedTradeSettlementPaymentMeans>
+                <ram:TypeCode>58</ram:TypeCode>
+                <ram:PayeePartyCreditorFinancialAccount>
+                    <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+                    <ram:IBANID>DE75512108001245126199</ram:IBANID>
+                </ram:PayeePartyCreditorFinancialAccount>
+            </ram:SpecifiedTradeSettlementPaymentMeans>
+            <ram:ApplicableTradeTax>
+                <ram:CalculatedAmount>0</ram:CalculatedAmount>
+                <ram:TypeCode>VAT</ram:TypeCode>
+                <ram:ExemptionReason>als gemeinnützig anerkannt</ram:ExemptionReason>
+                <ram:BasisAmount>120</ram:BasisAmount>
+                <ram:CategoryCode>O</ram:CategoryCode>
+                <ram:RateApplicablePercent>0</ram:RateApplicablePercent>
+            </ram:ApplicableTradeTax>
+            <ram:SpecifiedTradePaymentTerms>
+                <ram:Description>Wir möchten Sie bitten, die Teilnahmegebühr iHv. 120,00 € innerhalb von 14 Tagen auf das oben genannte Konto unter Angabe der Rechnungsnummer 1234/78/901 zu überweisen.</ram:Description>
+            </ram:SpecifiedTradePaymentTerms>
+            <ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+                <ram:LineTotalAmount>120</ram:LineTotalAmount>
+                <ram:TaxBasisTotalAmount>120</ram:TaxBasisTotalAmount>
+                <ram:TaxTotalAmount currencyID="EUR">0</ram:TaxTotalAmount>
+                <ram:GrandTotalAmount>120</ram:GrandTotalAmount>
+                <ram:DuePayableAmount>120</ram:DuePayableAmount>
+            </ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+        </ram:ApplicableHeaderTradeSettlement>
+    </rsm:SupplyChainTradeTransaction>
+</rsm:CrossIndustryInvoice>
--- a/tests/inputs/cii/01.05_minimal_test_uncefact.xml
+++ b/tests/inputs/cii/01.05_minimal_test_uncefact.xml
@@ -0,0 +1,153 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<rsm:CrossIndustryInvoice xmlns:rsm="urn:un:unece:uncefact:data:standard:CrossIndustryInvoice:100"
+                          xmlns:ram="urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100"
+                          xmlns:qdt="urn:un:unece:uncefact:data:standard:QualifiedDataType:100"
+                          xmlns:udt="urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100">
+    <rsm:ExchangedDocumentContext>
+		<!-- BT-23 -->
+        <ram:BusinessProcessSpecifiedDocumentContextParameter>
+            <ram:ID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</ram:ID>
+        </ram:BusinessProcessSpecifiedDocumentContextParameter>
+		<!-- BT-24 -->
+        <ram:GuidelineSpecifiedDocumentContextParameter>
+            <ram:ID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</ram:ID>
+        </ram:GuidelineSpecifiedDocumentContextParameter>
+    </rsm:ExchangedDocumentContext>
+    <rsm:ExchangedDocument>
+		<!-- BT-1 -->
+        <ram:ID>1234567</ram:ID>
+		<!-- BT-3 -->
+        <ram:TypeCode>380</ram:TypeCode>
+		<!-- BT-2 -->
+        <ram:IssueDateTime>
+            <udt:DateTimeString format="102">20180413</udt:DateTimeString>
+        </ram:IssueDateTime>        
+    </rsm:ExchangedDocument>
+    <rsm:SupplyChainTradeTransaction>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+				<!-- BT-126 -->
+                <ram:LineID>1</ram:LineID>				
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>                		
+				<!-- BT-153 -->
+                <ram:Name>Beratung</ram:Name>				                		
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>												                
+                <!-- BT-146 -->
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>158.1250000000</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>                
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+				<!-- BT-129, BT-130 -->
+                <ram:BilledQuantity unitCode="XPP">30.00000000000</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+					<!-- BT-151 -->
+                    <ram:TypeCode>VAT</ram:TypeCode>
+					<!-- BT-151 -->
+                    <ram:CategoryCode>O</ram:CategoryCode>		                    
+                </ram:ApplicableTradeTax>                                                             
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+					<!-- BT-131 -->
+                    <ram:LineTotalAmount>4743.75</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>                                
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>        
+        <ram:ApplicableHeaderTradeAgreement>
+			<!-- BT-10 -->
+            <ram:BuyerReference>90000000-03083-72</ram:BuyerReference>
+            <ram:SellerTradeParty>    
+                <!-- BT-29 -->
+                <ram:ID>9876543217894897438</ram:ID>
+				<!-- BT-27 -->
+                <ram:Name>[Seller name]</ram:Name>				     
+                <ram:DefinedTradeContact>
+					<!-- BT-41 -->
+                    <ram:PersonName>Tim Tester</ram:PersonName>
+					<!-- BT-42 -->
+                    <ram:TelephoneUniversalCommunication>
+                        <ram:CompleteNumber>012 3456789</ram:CompleteNumber>
+                    </ram:TelephoneUniversalCommunication>
+					<!-- BT-43 -->
+                    <ram:EmailURIUniversalCommunication>
+                        <ram:URIID>tim.tester@test.com</ram:URIID>
+                    </ram:EmailURIUniversalCommunication>
+                </ram:DefinedTradeContact>
+                <ram:PostalTradeAddress>
+					<!-- BT-38 -->
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>										
+					<!-- BT-37 -->
+                    <ram:CityName>[Seller city]</ram:CityName>
+					<!-- BT-40 -->
+                    <ram:CountryID>DE</ram:CountryID>                    
+                </ram:PostalTradeAddress>	
+                <!-- BT-34 -->
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">rechnungsausgang@test.com</ram:URIID>
+                </ram:URIUniversalCommunication>                
+            </ram:SellerTradeParty>
+            <ram:BuyerTradeParty>				
+				<!-- BT-44 -->
+                <ram:Name>[Buyer name]</ram:Name>                                
+                <ram:PostalTradeAddress>
+					<!-- BT-53 -->
+                    <ram:PostcodeCode>98765</ram:PostcodeCode>										
+					<!-- BT-52 -->
+                    <ram:CityName>[Buyer city]</ram:CityName>
+					<!-- BT-55 -->
+                    <ram:CountryID>DE</ram:CountryID>                    
+                </ram:PostalTradeAddress>
+				<!-- BT-49 -->
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">rechnungseingang@test.de</ram:URIID>
+                </ram:URIUniversalCommunication>                
+            </ram:BuyerTradeParty>
+        </ram:ApplicableHeaderTradeAgreement>
+        <ram:ApplicableHeaderTradeDelivery/>
+        <ram:ApplicableHeaderTradeSettlement>			            			       
+			<!-- BT-5 -->
+            <ram:InvoiceCurrencyCode>EUR</ram:InvoiceCurrencyCode>                                 
+            <ram:SpecifiedTradeSettlementPaymentMeans>				
+                <!-- BT-81 -->
+                <ram:TypeCode>58</ram:TypeCode>
+                <ram:PayeePartyCreditorFinancialAccount>
+					<!-- BT-84 -->
+                    <ram:IBANID>DE75512108001245126199</ram:IBANID>					
+                </ram:PayeePartyCreditorFinancialAccount>               
+            </ram:SpecifiedTradeSettlementPaymentMeans>           
+            <ram:ApplicableTradeTax>
+				<!-- BT-117 -->
+                <ram:CalculatedAmount>0.00</ram:CalculatedAmount>
+				<!-- BT-118 -->
+                <ram:TypeCode>VAT</ram:TypeCode>
+				<!-- BT-116 -->
+                <ram:BasisAmount>4743.75</ram:BasisAmount>
+				<!-- BT-118 -->
+                <ram:CategoryCode>O</ram:CategoryCode>		
+                <!-- BT-121 -->
+                <ram:ExemptionReasonCode>VATEX-EU-O</ram:ExemptionReasonCode>    
+				<!-- BT-119 -->
+                <ram:RateApplicablePercent>0</ram:RateApplicablePercent>
+            </ram:ApplicableTradeTax>                
+            <ram:SpecifiedTradePaymentTerms>                        
+                <!-- BT-9 -->
+                <ram:DueDateDateTime>
+                    <udt:DateTimeString format="102">20180413</udt:DateTimeString>
+                </ram:DueDateDateTime>                
+            </ram:SpecifiedTradePaymentTerms> 
+            <ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+				<!-- BT-106 -->
+                <ram:LineTotalAmount>4743.75</ram:LineTotalAmount>				
+				<!-- BT-109 -->
+                <ram:TaxBasisTotalAmount>4743.75</ram:TaxBasisTotalAmount>	                
+				<!-- BT-112 -->
+                <ram:GrandTotalAmount>4743.75</ram:GrandTotalAmount>				
+				<!-- BT-115 -->
+                <ram:DuePayableAmount>4743.75</ram:DuePayableAmount>
+            </ram:SpecifiedTradeSettlementHeaderMonetarySummation>                
+        </ram:ApplicableHeaderTradeSettlement>
+    </rsm:SupplyChainTradeTransaction>
+</rsm:CrossIndustryInvoice>
--- a/tests/inputs/cii/01.05a-INVOICE_uncefact.xml
+++ b/tests/inputs/cii/01.05a-INVOICE_uncefact.xml
@@ -0,0 +1,230 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<rsm:CrossIndustryInvoice xmlns:rsm="urn:un:unece:uncefact:data:standard:CrossIndustryInvoice:100"
+                          xmlns:ram="urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100"
+                          xmlns:qdt="urn:un:unece:uncefact:data:standard:QualifiedDataType:100"
+                          xmlns:udt="urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100">
+    <rsm:ExchangedDocumentContext>
+        <ram:BusinessProcessSpecifiedDocumentContextParameter>
+            <ram:ID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</ram:ID>
+        </ram:BusinessProcessSpecifiedDocumentContextParameter>
+        <ram:GuidelineSpecifiedDocumentContextParameter>
+            <ram:ID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</ram:ID>
+        </ram:GuidelineSpecifiedDocumentContextParameter>
+    </rsm:ExchangedDocumentContext>
+    <rsm:ExchangedDocument>
+        <ram:ID>PRG1502112</ram:ID>
+        <ram:TypeCode>380</ram:TypeCode>
+        <ram:IssueDateTime>
+            <udt:DateTimeString format="102">20150424</udt:DateTimeString>
+        </ram:IssueDateTime>
+        <ram:IncludedNote>
+            <ram:Content>Trainer: Herr […]</ram:Content>
+            <ram:SubjectCode>ADU</ram:SubjectCode>
+        </ram:IncludedNote>
+    </rsm:ExchangedDocument>
+    <rsm:SupplyChainTradeTransaction>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>Seminar: […]</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:Name>Seminar</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>1340</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="DAY">5</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>6700</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>Raumkosten Schulungsort</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:Name>Raumkosten</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>300</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="DAY">5</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>1500</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>Reisekostenpauschale</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:Name>Reisekostenpauschale</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>90</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">5</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>450</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>Seminarunterlagen</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:Name>Seminarunterlagen</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>20</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">11</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>220</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:ApplicableHeaderTradeAgreement>
+            <ram:BuyerReference>99000000-18188-18</ram:BuyerReference>
+            <ram:SellerTradeParty>
+                <ram:Name>[Seller name]</ram:Name>
+                <ram:Description>Sitz der Gesellschaft […], Registergericht […], Amtsgericht […]</ram:Description>
+                <ram:SpecifiedLegalOrganization>
+                    <ram:ID>HRB 123456</ram:ID>
+                </ram:SpecifiedLegalOrganization>
+                <ram:DefinedTradeContact>
+                    <ram:PersonName>[Seller contact person]</ram:PersonName>
+                    <ram:TelephoneUniversalCommunication>
+                        <ram:CompleteNumber>+49 123456789</ram:CompleteNumber>
+                    </ram:TelephoneUniversalCommunication>
+                    <ram:EmailURIUniversalCommunication>
+                        <ram:URIID>xxx@schulung.de</ram:URIID>
+                    </ram:EmailURIUniversalCommunication>
+                </ram:DefinedTradeContact>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:LineOne>[Seller address line 1]</ram:LineOne>
+                    <ram:CityName>[Seller city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">seller@email.de</ram:URIID>
+                </ram:URIUniversalCommunication>
+                <ram:SpecifiedTaxRegistration>
+                    <ram:ID schemeID="VA">DE123456789</ram:ID>
+                </ram:SpecifiedTaxRegistration>
+            </ram:SellerTradeParty>
+            <ram:BuyerTradeParty>
+                <ram:ID>BI123456</ram:ID>
+                <ram:Name>[Buyer name]</ram:Name>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:LineOne>[Buyer address line 1]</ram:LineOne>
+                    <ram:CityName>[Buyer city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">buyer@info.de</ram:URIID>
+                </ram:URIUniversalCommunication>
+            </ram:BuyerTradeParty>
+            <ram:SpecifiedProcuringProject>
+                <ram:ID>PR456789</ram:ID>
+                <ram:Name>Project reference</ram:Name>
+            </ram:SpecifiedProcuringProject>
+        </ram:ApplicableHeaderTradeAgreement>
+        <ram:ApplicableHeaderTradeDelivery>
+            <ram:ShipToTradeParty>
+                <ram:Name>Schulungsanbieter</ram:Name>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:CityName>Schulungsort</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+            </ram:ShipToTradeParty>
+        </ram:ApplicableHeaderTradeDelivery>
+        <ram:ApplicableHeaderTradeSettlement>
+            <ram:InvoiceCurrencyCode>EUR</ram:InvoiceCurrencyCode>
+            <ram:SpecifiedTradeSettlementPaymentMeans>
+                <ram:TypeCode>58</ram:TypeCode>
+                <ram:PayeePartyCreditorFinancialAccount>
+                    <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+                    <ram:IBANID>DE75512108001245126199</ram:IBANID>
+                </ram:PayeePartyCreditorFinancialAccount>
+            </ram:SpecifiedTradeSettlementPaymentMeans>
+            <ram:SpecifiedTradeSettlementPaymentMeans>
+                <ram:TypeCode>58</ram:TypeCode>
+                <ram:PayeePartyCreditorFinancialAccount>
+                    <ram:IBANID>DE12500105170648489890</ram:IBANID>
+                </ram:PayeePartyCreditorFinancialAccount>
+            </ram:SpecifiedTradeSettlementPaymentMeans>
+            <ram:ApplicableTradeTax>
+                <ram:CalculatedAmount>1685.3</ram:CalculatedAmount>
+                <ram:TypeCode>VAT</ram:TypeCode>
+                <ram:BasisAmount>8870</ram:BasisAmount>
+                <ram:CategoryCode>S</ram:CategoryCode>
+                <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+            </ram:ApplicableTradeTax>
+            <ram:BillingSpecifiedPeriod>
+                <ram:StartDateTime>
+                    <udt:DateTimeString format="102">20150420</udt:DateTimeString>
+                </ram:StartDateTime>
+                <ram:EndDateTime>
+                    <udt:DateTimeString format="102">20150424</udt:DateTimeString>
+                </ram:EndDateTime>
+            </ram:BillingSpecifiedPeriod>
+            <ram:SpecifiedTradePaymentTerms>
+                <ram:Description>14 Tage</ram:Description>
+            </ram:SpecifiedTradePaymentTerms>
+            <ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+                <ram:LineTotalAmount>8870</ram:LineTotalAmount>
+                <ram:TaxBasisTotalAmount>8870</ram:TaxBasisTotalAmount>
+                <ram:TaxTotalAmount currencyID="EUR">1685.3</ram:TaxTotalAmount>
+                <ram:GrandTotalAmount>10555.3</ram:GrandTotalAmount>
+                <ram:DuePayableAmount>10555.3</ram:DuePayableAmount>
+            </ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+        </ram:ApplicableHeaderTradeSettlement>
+    </rsm:SupplyChainTradeTransaction>
+</rsm:CrossIndustryInvoice>
--- a/tests/inputs/cii/01.06_minimal_test_uncefact.xml
+++ b/tests/inputs/cii/01.06_minimal_test_uncefact.xml
@@ -0,0 +1,159 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<rsm:CrossIndustryInvoice xmlns:rsm="urn:un:unece:uncefact:data:standard:CrossIndustryInvoice:100"
+                          xmlns:ram="urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100"
+                          xmlns:qdt="urn:un:unece:uncefact:data:standard:QualifiedDataType:100"
+                          xmlns:udt="urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100">
+    <rsm:ExchangedDocumentContext>
+		<!-- BT-23 -->
+        <ram:BusinessProcessSpecifiedDocumentContextParameter>
+            <ram:ID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</ram:ID>
+        </ram:BusinessProcessSpecifiedDocumentContextParameter>
+		<!-- BT-24 -->
+        <ram:GuidelineSpecifiedDocumentContextParameter>
+            <ram:ID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</ram:ID>
+        </ram:GuidelineSpecifiedDocumentContextParameter>
+    </rsm:ExchangedDocumentContext>
+    <rsm:ExchangedDocument>
+		<!-- BT-1 -->
+        <ram:ID>1234567</ram:ID>
+		<!-- BT-3 -->
+        <ram:TypeCode>380</ram:TypeCode>
+		<!-- BT-2 -->
+        <ram:IssueDateTime>
+            <udt:DateTimeString format="102">20180413</udt:DateTimeString>
+        </ram:IssueDateTime>        
+    </rsm:ExchangedDocument>
+    <rsm:SupplyChainTradeTransaction>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+				<!-- BT-126 -->
+                <ram:LineID>1</ram:LineID>				
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>                		
+				<!-- BT-153 -->
+                <ram:Name>Beratung</ram:Name>				                		
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>												                
+                <!-- BT-146 -->
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>132.8780000000</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>                
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+				<!-- BT-129, BT-130 -->
+                <ram:BilledQuantity unitCode="XPP">30.00000000000</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+					<!-- BT-151 -->
+                    <ram:TypeCode>VAT</ram:TypeCode>
+					<!-- BT-151 -->
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <!-- BT-152 -->
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>                                                             
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+					<!-- BT-131 -->
+                    <ram:LineTotalAmount>3986.34</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>                                
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>        
+        <ram:ApplicableHeaderTradeAgreement>
+			<!-- BT-10 -->
+            <ram:BuyerReference>90000000-03083-72</ram:BuyerReference>
+            <ram:SellerTradeParty>    
+                <!-- BT-29 -->
+                <ram:ID>9876543217894897438</ram:ID>
+				<!-- BT-27 -->
+                <ram:Name>[Seller name]</ram:Name>				     
+                <ram:DefinedTradeContact>
+					<!-- BT-41 -->
+                    <ram:PersonName>Tim Tester</ram:PersonName>
+					<!-- BT-42 -->
+                    <ram:TelephoneUniversalCommunication>
+                        <ram:CompleteNumber>012 3456789</ram:CompleteNumber>
+                    </ram:TelephoneUniversalCommunication>
+					<!-- BT-43 -->
+                    <ram:EmailURIUniversalCommunication>
+                        <ram:URIID>tim.tester@test.com</ram:URIID>
+                    </ram:EmailURIUniversalCommunication>
+                </ram:DefinedTradeContact>
+                <ram:PostalTradeAddress>
+					<!-- BT-38 -->
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>										
+					<!-- BT-37 -->
+                    <ram:CityName>[Seller city]</ram:CityName>
+					<!-- BT-40 -->
+                    <ram:CountryID>DE</ram:CountryID>                    
+                </ram:PostalTradeAddress>	
+                <!-- BT-34 -->
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">rechnungsausgang@test.com</ram:URIID>
+                </ram:URIUniversalCommunication>
+                <!-- BT-31 -->
+                <ram:SpecifiedTaxRegistration>
+                    <ram:ID schemeID="VA">ATU123456789</ram:ID>
+                </ram:SpecifiedTaxRegistration>
+            </ram:SellerTradeParty>
+            <ram:BuyerTradeParty>				
+				<!-- BT-44 -->
+                <ram:Name>[Buyer name]</ram:Name>                                
+                <ram:PostalTradeAddress>
+					<!-- BT-53 -->
+                    <ram:PostcodeCode>98765</ram:PostcodeCode>										
+					<!-- BT-52 -->
+                    <ram:CityName>[Buyer city]</ram:CityName>
+					<!-- BT-55 -->
+                    <ram:CountryID>DE</ram:CountryID>                    
+                </ram:PostalTradeAddress>
+				<!-- BT-49 -->
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">rechnungseingang@test.de</ram:URIID>
+                </ram:URIUniversalCommunication>                
+            </ram:BuyerTradeParty>
+        </ram:ApplicableHeaderTradeAgreement>
+        <ram:ApplicableHeaderTradeDelivery/>
+        <ram:ApplicableHeaderTradeSettlement>			            			       
+			<!-- BT-5 -->
+            <ram:InvoiceCurrencyCode>EUR</ram:InvoiceCurrencyCode>                                 
+            <ram:SpecifiedTradeSettlementPaymentMeans>				
+                <!-- BT-81 -->
+                <ram:TypeCode>58</ram:TypeCode>
+                <ram:PayeePartyCreditorFinancialAccount>
+					<!-- BT-84 -->
+                    <ram:IBANID>DE75512108001245126199</ram:IBANID>					
+                </ram:PayeePartyCreditorFinancialAccount>               
+            </ram:SpecifiedTradeSettlementPaymentMeans>           
+            <ram:ApplicableTradeTax>
+				<!-- BT-117 -->
+                <ram:CalculatedAmount>757.41</ram:CalculatedAmount>
+				<!-- BT-118 -->
+                <ram:TypeCode>VAT</ram:TypeCode>
+				<!-- BT-116 -->
+                <ram:BasisAmount>3986.34</ram:BasisAmount>
+				<!-- BT-118 -->
+                <ram:CategoryCode>S</ram:CategoryCode>		   
+				<!-- BT-119 -->
+                <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+            </ram:ApplicableTradeTax>                
+            <ram:SpecifiedTradePaymentTerms>                        
+                <!-- BT-9 -->
+                <ram:DueDateDateTime>
+                    <udt:DateTimeString format="102">20180413</udt:DateTimeString>
+                </ram:DueDateDateTime>                
+            </ram:SpecifiedTradePaymentTerms> 
+            <ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+				<!-- BT-106 -->
+                <ram:LineTotalAmount>3986.34</ram:LineTotalAmount>				
+				<!-- BT-109 -->
+                <ram:TaxBasisTotalAmount>3986.34</ram:TaxBasisTotalAmount>
+                <!-- BT-110 -->
+                <ram:TaxTotalAmount currencyID="EUR">757.41</ram:TaxTotalAmount>
+				<!-- BT-112 -->
+                <ram:GrandTotalAmount>4743.75</ram:GrandTotalAmount>				
+				<!-- BT-115 -->
+                <ram:DuePayableAmount>4743.75</ram:DuePayableAmount>
+            </ram:SpecifiedTradeSettlementHeaderMonetarySummation>                
+        </ram:ApplicableHeaderTradeSettlement>
+    </rsm:SupplyChainTradeTransaction>
+</rsm:CrossIndustryInvoice>
--- a/tests/inputs/cii/01.06a-INVOICE_uncefact.xml
+++ b/tests/inputs/cii/01.06a-INVOICE_uncefact.xml
@@ -0,0 +1,305 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<rsm:CrossIndustryInvoice xmlns:rsm="urn:un:unece:uncefact:data:standard:CrossIndustryInvoice:100"
+                          xmlns:ram="urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100"
+                          xmlns:qdt="urn:un:unece:uncefact:data:standard:QualifiedDataType:100"
+                          xmlns:udt="urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100">
+    <rsm:ExchangedDocumentContext>
+        <ram:BusinessProcessSpecifiedDocumentContextParameter>
+            <ram:ID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</ram:ID>
+        </ram:BusinessProcessSpecifiedDocumentContextParameter>
+        <ram:GuidelineSpecifiedDocumentContextParameter>
+            <ram:ID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</ram:ID>
+        </ram:GuidelineSpecifiedDocumentContextParameter>
+    </rsm:ExchangedDocumentContext>
+    <rsm:ExchangedDocument>
+        <ram:ID>R123456789</ram:ID>
+        <ram:TypeCode>380</ram:TypeCode>
+        <ram:IssueDateTime>
+            <udt:DateTimeString format="102">20160706</udt:DateTimeString>
+        </ram:IssueDateTime>
+        <ram:IncludedNote>
+            <ram:Content>Die auf Transaktionsebene ausgewiesenen Händlerentgelte und Interchangewerte werden im Rahmen der Abrechnung addiert und kaufmännisch auf ganze Währungseinheiten gerundet.</ram:Content>
+            <ram:SubjectCode>ADU</ram:SubjectCode>
+        </ram:IncludedNote>
+    </rsm:ExchangedDocument>
+    <rsm:SupplyChainTradeTransaction>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>8000593202</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:Name>Servicegebühren A</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>17.24</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="MON">1</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>17.24</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>8000612340</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:Name>Servicegebühren B</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>16704.07</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="MON">1</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>16704.07</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>8000619834</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:Name>Servicegebühren C</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>5.21</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="MON">1</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>5.21</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>8000619863</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:Name>Servicegebühren D</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>282.36</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="MON">1</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>282.36</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>8000613563</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:Name>Servicegebühren E</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>386.68</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="MON">1</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>386.68</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>8000648582</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:Name>Servicegebühren F</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>535.11</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="MON">1</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>535.11</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>8000648584</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:Name>Servicegebühren G</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>306.05</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="MON">1</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>306.05</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:ApplicableHeaderTradeAgreement>
+            <ram:BuyerReference>99000000-01944-98</ram:BuyerReference>
+            <ram:SellerTradeParty>
+                <ram:Name>[Seller name]</ram:Name>
+                <ram:Description>Amtsgericht […]</ram:Description>
+                <ram:SpecifiedLegalOrganization>
+                    <ram:ID>HRB 123456</ram:ID>
+                </ram:SpecifiedLegalOrganization>
+                <ram:DefinedTradeContact>
+                    <ram:PersonName>Kundenservice - Vertriebspartner Direktkunden</ram:PersonName>
+                    <ram:TelephoneUniversalCommunication>
+                        <ram:CompleteNumber>+49(0)12 3456-7890</ram:CompleteNumber>
+                    </ram:TelephoneUniversalCommunication>
+                    <ram:EmailURIUniversalCommunication>
+                        <ram:URIID>kundenservice@email.de</ram:URIID>
+                    </ram:EmailURIUniversalCommunication>
+                </ram:DefinedTradeContact>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:LineOne>[Seller address line 1]</ram:LineOne>
+                    <ram:CityName>[Seller city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">seller@email.de</ram:URIID>
+                </ram:URIUniversalCommunication>
+                <ram:SpecifiedTaxRegistration>
+                    <ram:ID schemeID="VA">DE123456789</ram:ID>
+                </ram:SpecifiedTaxRegistration>                
+            </ram:SellerTradeParty>
+            <ram:BuyerTradeParty>
+                <ram:ID>B123456789</ram:ID>
+                <ram:Name>[Buyer name]</ram:Name>
+                <ram:DefinedTradeContact>
+                    <ram:PersonName>Abteilung Buchhaltung</ram:PersonName>
+                </ram:DefinedTradeContact>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:LineOne>[Buyer address line 1]</ram:LineOne>
+                    <ram:CityName>[Buyer city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">buyer@info.de</ram:URIID>
+                </ram:URIUniversalCommunication>
+            </ram:BuyerTradeParty>
+            <ram:ContractReferencedDocument>
+                <ram:IssuerAssignedID>CR987654321</ram:IssuerAssignedID>
+            </ram:ContractReferencedDocument>
+        </ram:ApplicableHeaderTradeAgreement>
+        <ram:ApplicableHeaderTradeDelivery>
+            <ram:ShipToTradeParty>
+                <ram:Name>Leistungsempfänger</ram:Name>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:LineOne>[Deliver to address line 1]</ram:LineOne>
+                    <ram:CityName>[Deliver to city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+            </ram:ShipToTradeParty>
+        </ram:ApplicableHeaderTradeDelivery>
+        <ram:ApplicableHeaderTradeSettlement>
+            <ram:InvoiceCurrencyCode>EUR</ram:InvoiceCurrencyCode>
+            <ram:SpecifiedTradeSettlementPaymentMeans>
+                <ram:TypeCode>58</ram:TypeCode>
+                <ram:PayeePartyCreditorFinancialAccount>
+                    <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+                    <ram:IBANID>DE12500105170648489890</ram:IBANID>
+                </ram:PayeePartyCreditorFinancialAccount>
+            </ram:SpecifiedTradeSettlementPaymentMeans>
+            <ram:ApplicableTradeTax>
+                <ram:CalculatedAmount>3464.98</ram:CalculatedAmount>
+                <ram:TypeCode>VAT</ram:TypeCode>
+                <ram:BasisAmount>18236.72</ram:BasisAmount>
+                <ram:CategoryCode>S</ram:CategoryCode>
+                <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+            </ram:ApplicableTradeTax>
+            <ram:BillingSpecifiedPeriod>
+                <ram:StartDateTime>
+                    <udt:DateTimeString format="102">20160601</udt:DateTimeString>
+                </ram:StartDateTime>
+                <ram:EndDateTime>
+                    <udt:DateTimeString format="102">20160630</udt:DateTimeString>
+                </ram:EndDateTime>
+            </ram:BillingSpecifiedPeriod>
+            <ram:SpecifiedTradePaymentTerms>
+                <ram:Description>Bitte überweisen Sie den Gesamtbetrag in Höhe von EUR […] innerhalb von […] Tagen ohne Abzug auf unser Konto IBAN […] bei […] BIC […].</ram:Description>
+            </ram:SpecifiedTradePaymentTerms>
+            <ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+                <ram:LineTotalAmount>18236.72</ram:LineTotalAmount>
+                <ram:TaxBasisTotalAmount>18236.72</ram:TaxBasisTotalAmount>
+                <ram:TaxTotalAmount currencyID="EUR">3464.98</ram:TaxTotalAmount>
+                <ram:GrandTotalAmount>21701.7</ram:GrandTotalAmount>
+                <ram:DuePayableAmount>21701.7</ram:DuePayableAmount>
+            </ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+        </ram:ApplicableHeaderTradeSettlement>
+    </rsm:SupplyChainTradeTransaction>
+</rsm:CrossIndustryInvoice>
--- a/tests/inputs/cii/01.07a-INVOICE_uncefact.xml
+++ b/tests/inputs/cii/01.07a-INVOICE_uncefact.xml
@@ -0,0 +1,154 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<rsm:CrossIndustryInvoice xmlns:rsm="urn:un:unece:uncefact:data:standard:CrossIndustryInvoice:100"
+                          xmlns:ram="urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100"
+                          xmlns:qdt="urn:un:unece:uncefact:data:standard:QualifiedDataType:100"
+                          xmlns:udt="urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100">
+    <rsm:ExchangedDocumentContext>
+        <ram:BusinessProcessSpecifiedDocumentContextParameter>
+            <ram:ID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</ram:ID>
+        </ram:BusinessProcessSpecifiedDocumentContextParameter>
+        <ram:GuidelineSpecifiedDocumentContextParameter>
+            <ram:ID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</ram:ID>
+        </ram:GuidelineSpecifiedDocumentContextParameter>
+    </rsm:ExchangedDocumentContext>
+    <rsm:ExchangedDocument>
+        <ram:ID>R1234567</ram:ID>
+        <ram:TypeCode>380</ram:TypeCode>
+        <ram:IssueDateTime>
+            <udt:DateTimeString format="102">20160630</udt:DateTimeString>
+        </ram:IssueDateTime>
+        <ram:IncludedNote>
+            <ram:Content>Bitte überweisen Sie den Gesamtbetrag in Höhe von EUR 45,22 auf unser Konto Nr. […], BIC […].</ram:Content>
+            <ram:SubjectCode>ADU</ram:SubjectCode>
+        </ram:IncludedNote>
+        <ram:IncludedNote>
+            <ram:Content>Bei Fragen steht Ihnen unsere Kundenbetreuung gern unter der Rufnummer [...] zur Verfügung. Beanstandungen am Inhalt dieser Rechnung sind uns innerhalb von 28 Tagen nach Erhalt der Rechnung schriftlich mitzuteilen. Nach Ablauf dieser Frist gilt der Saldo endgültig.</ram:Content>
+            <ram:SubjectCode>ADU</ram:SubjectCode>
+        </ram:IncludedNote>
+        <ram:IncludedNote>
+            <ram:Content>Die Deutsche Kreditwirtschaft hat die Händlerbedingungen für die Teilnahme am electronic cash-System angepasst. Sie finden diese unter https://www…./de/agb. Die neuen Händlerbedingungen gelten ab sofort, wobei Sie binnen sechs Wochen nach Bekanntgabe der Änderung einen Widerspruch an Ihre Hausbank richten können. Bitte klären Sie sämtliche Fragen diese Bedingungen betreffend mit Ihrer Hausbank.</ram:Content>
+            <ram:SubjectCode>ADU</ram:SubjectCode>
+        </ram:IncludedNote>
+    </rsm:ExchangedDocument>
+    <rsm:SupplyChainTradeTransaction>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>000040</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:Name>Miete X</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>38</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="MON">1</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:BillingSpecifiedPeriod>
+                    <ram:StartDateTime>
+                        <udt:DateTimeString format="102">20160601</udt:DateTimeString>
+                    </ram:StartDateTime>
+                    <ram:EndDateTime>
+                        <udt:DateTimeString format="102">20160630</udt:DateTimeString>
+                    </ram:EndDateTime>
+                </ram:BillingSpecifiedPeriod>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>38</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:ApplicableHeaderTradeAgreement>
+            <ram:BuyerReference>99000000-05676-98</ram:BuyerReference>
+            <ram:SellerTradeParty>
+                <ram:Name>[Seller name]</ram:Name>
+                <ram:DefinedTradeContact>
+                    <ram:PersonName>[Seller contact person]</ram:PersonName>
+                    <ram:TelephoneUniversalCommunication>
+                        <ram:CompleteNumber>+49 (0)69…</ram:CompleteNumber>
+                    </ram:TelephoneUniversalCommunication>
+                    <ram:EmailURIUniversalCommunication>
+                        <ram:URIID>seller@info.de</ram:URIID>
+                    </ram:EmailURIUniversalCommunication>
+                </ram:DefinedTradeContact>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:LineOne>[Seller address line 1]</ram:LineOne>
+                    <ram:CityName>[Seller city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">seller@email.de</ram:URIID>
+                </ram:URIUniversalCommunication>
+                <ram:SpecifiedTaxRegistration>
+                    <ram:ID schemeID="VA">DE123456789</ram:ID>
+                </ram:SpecifiedTaxRegistration>
+            </ram:SellerTradeParty>
+            <ram:BuyerTradeParty>
+                <ram:ID>B123456789</ram:ID>
+                <ram:Name>[Buyer name]</ram:Name>
+                <ram:DefinedTradeContact>
+                    <ram:PersonName>[Buyer contact person]</ram:PersonName>
+                </ram:DefinedTradeContact>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:LineOne>[Buyer address line 1]</ram:LineOne>
+                    <ram:CityName>[Buyer city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">buyer@info.de</ram:URIID>
+                </ram:URIUniversalCommunication>
+                <ram:SpecifiedTaxRegistration>
+                    <ram:ID schemeID="VA">DE123456789</ram:ID>
+                </ram:SpecifiedTaxRegistration>                
+            </ram:BuyerTradeParty>
+        </ram:ApplicableHeaderTradeAgreement>
+        <ram:ApplicableHeaderTradeDelivery/>
+        <ram:ApplicableHeaderTradeSettlement>
+            <ram:InvoiceCurrencyCode>EUR</ram:InvoiceCurrencyCode>
+            <ram:SpecifiedTradeSettlementPaymentMeans>
+                <ram:TypeCode>58</ram:TypeCode>
+                <ram:PayeePartyCreditorFinancialAccount>
+                    <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+                    <ram:IBANID>DE12500105170648489890</ram:IBANID>
+                </ram:PayeePartyCreditorFinancialAccount>
+            </ram:SpecifiedTradeSettlementPaymentMeans>
+            <ram:ApplicableTradeTax>
+                <ram:CalculatedAmount>7.22</ram:CalculatedAmount>
+                <ram:TypeCode>VAT</ram:TypeCode>
+                <ram:BasisAmount>38</ram:BasisAmount>
+                <ram:CategoryCode>S</ram:CategoryCode>
+                <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+            </ram:ApplicableTradeTax>
+            <ram:BillingSpecifiedPeriod>
+                <ram:StartDateTime>
+                    <udt:DateTimeString format="102">20160601</udt:DateTimeString>
+                </ram:StartDateTime>
+                <ram:EndDateTime>
+                    <udt:DateTimeString format="102">20160630</udt:DateTimeString>
+                </ram:EndDateTime>
+            </ram:BillingSpecifiedPeriod>
+            <ram:SpecifiedTradePaymentTerms>
+                <ram:Description>Bis zum 14.08.2016 ohne Abzug</ram:Description>
+                <ram:DueDateDateTime>
+                    <udt:DateTimeString format="102">20160814</udt:DateTimeString>
+                </ram:DueDateDateTime>
+            </ram:SpecifiedTradePaymentTerms>
+            <ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+                <ram:LineTotalAmount>38</ram:LineTotalAmount>
+                <ram:TaxBasisTotalAmount>38</ram:TaxBasisTotalAmount>
+                <ram:TaxTotalAmount currencyID="EUR">7.22</ram:TaxTotalAmount>
+                <ram:GrandTotalAmount>45.22</ram:GrandTotalAmount>
+                <ram:DuePayableAmount>45.22</ram:DuePayableAmount>
+            </ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+        </ram:ApplicableHeaderTradeSettlement>
+    </rsm:SupplyChainTradeTransaction>
+</rsm:CrossIndustryInvoice>
--- a/tests/inputs/cii/01.08a-INVOICE_uncefact.xml
+++ b/tests/inputs/cii/01.08a-INVOICE_uncefact.xml
@@ -0,0 +1,145 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<rsm:CrossIndustryInvoice xmlns:rsm="urn:un:unece:uncefact:data:standard:CrossIndustryInvoice:100"
+                          xmlns:ram="urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100"
+                          xmlns:qdt="urn:un:unece:uncefact:data:standard:QualifiedDataType:100"
+                          xmlns:udt="urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100">
+    <rsm:ExchangedDocumentContext>
+        <ram:BusinessProcessSpecifiedDocumentContextParameter>
+            <ram:ID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</ram:ID>
+        </ram:BusinessProcessSpecifiedDocumentContextParameter>
+        <ram:GuidelineSpecifiedDocumentContextParameter>
+            <ram:ID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</ram:ID>
+        </ram:GuidelineSpecifiedDocumentContextParameter>
+    </rsm:ExchangedDocumentContext>
+    <rsm:ExchangedDocument>
+        <ram:ID>R123456789</ram:ID>
+        <ram:TypeCode>380</ram:TypeCode>
+        <ram:IssueDateTime>
+            <udt:DateTimeString format="102">20160118</udt:DateTimeString>
+        </ram:IssueDateTime>
+    </rsm:ExchangedDocument>
+    <rsm:SupplyChainTradeTransaction>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>0020</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:SellerAssignedID>519304</ram:SellerAssignedID>
+                <ram:Name>Zentrale Administrationslösung Bereitstellung von Werkzeugen zur Administration/Betreuung</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>197.89</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">12</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>2374.68</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:ApplicableHeaderTradeAgreement>
+            <ram:BuyerReference>04011000-12349-88</ram:BuyerReference>
+            <ram:SellerTradeParty>
+                <ram:Name>[Seller name]</ram:Name>
+                <ram:Description>Amtsgericht […], Geschäftsführer: […], Sitz der Gesellschaft […], Aufsichtsratvorsitzender: […]</ram:Description>
+                <ram:SpecifiedLegalOrganization>
+                    <ram:ID>HRB 123</ram:ID>
+                    <ram:TradingBusinessName>[Seller trading name]</ram:TradingBusinessName>
+                </ram:SpecifiedLegalOrganization>
+                <ram:DefinedTradeContact>
+                    <ram:PersonName>Auskunft erteilt Ihnen</ram:PersonName>
+                    <ram:TelephoneUniversalCommunication>
+                        <ram:CompleteNumber>1234567890</ram:CompleteNumber>
+                    </ram:TelephoneUniversalCommunication>
+                    <ram:EmailURIUniversalCommunication>
+                        <ram:URIID>seller@test.de</ram:URIID>
+                    </ram:EmailURIUniversalCommunication>
+                </ram:DefinedTradeContact>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:LineOne>Postfach 123456</ram:LineOne>
+                    <ram:CityName>[Seller city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">seller@email.de</ram:URIID>
+                </ram:URIUniversalCommunication>
+                <ram:SpecifiedTaxRegistration>
+                    <ram:ID schemeID="VA">DE123456789</ram:ID>
+                </ram:SpecifiedTaxRegistration>
+            </ram:SellerTradeParty>
+            <ram:BuyerTradeParty>
+                <ram:Name>[Buyer name]</ram:Name>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:LineOne>[Buyer address line 1]</ram:LineOne>
+                    <ram:CityName>[Buyer city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">buyer@info.de</ram:URIID>
+                </ram:URIUniversalCommunication>
+            </ram:BuyerTradeParty>
+            <ram:SellerOrderReferencedDocument>
+                <ram:IssuerAssignedID>A123456789</ram:IssuerAssignedID>
+            </ram:SellerOrderReferencedDocument>
+            <ram:ContractReferencedDocument>
+                <ram:IssuerAssignedID>V876543210</ram:IssuerAssignedID>
+            </ram:ContractReferencedDocument>
+        </ram:ApplicableHeaderTradeAgreement>
+        <ram:ApplicableHeaderTradeDelivery/>
+        <ram:ApplicableHeaderTradeSettlement>
+            <ram:InvoiceCurrencyCode>EUR</ram:InvoiceCurrencyCode>
+            <ram:SpecifiedTradeSettlementPaymentMeans>
+                <ram:TypeCode>58</ram:TypeCode>
+                <ram:PayeePartyCreditorFinancialAccount>
+                    <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+                    <ram:IBANID>DE12500105170648489890</ram:IBANID>
+                </ram:PayeePartyCreditorFinancialAccount>
+            </ram:SpecifiedTradeSettlementPaymentMeans>
+            <ram:SpecifiedTradeSettlementPaymentMeans>
+                <ram:TypeCode>58</ram:TypeCode>
+                <ram:PayeePartyCreditorFinancialAccount>
+                    <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+                    <ram:IBANID>DE89370400440532013000</ram:IBANID>
+                </ram:PayeePartyCreditorFinancialAccount>
+            </ram:SpecifiedTradeSettlementPaymentMeans>
+            <ram:SpecifiedTradeSettlementPaymentMeans>
+                <ram:TypeCode>58</ram:TypeCode>
+                <ram:PayeePartyCreditorFinancialAccount>
+                    <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+                    <ram:IBANID>DE75512108001245126199</ram:IBANID>
+                </ram:PayeePartyCreditorFinancialAccount>
+            </ram:SpecifiedTradeSettlementPaymentMeans>
+            <ram:ApplicableTradeTax>
+                <ram:CalculatedAmount>451.19</ram:CalculatedAmount>
+                <ram:TypeCode>VAT</ram:TypeCode>
+                <ram:BasisAmount>2374.68</ram:BasisAmount>
+                <ram:CategoryCode>S</ram:CategoryCode>
+                <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+            </ram:ApplicableTradeTax>
+            <ram:SpecifiedTradePaymentTerms>
+                <ram:Description>Die Zahlung wird als Teilleistung monatl. Erbracht und ist monatl. zum letzten Werktag fällig. …</ram:Description>
+                <ram:DueDateDateTime>
+                    <udt:DateTimeString format="102">20160201</udt:DateTimeString>
+                </ram:DueDateDateTime>
+            </ram:SpecifiedTradePaymentTerms>
+            <ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+                <ram:LineTotalAmount>2374.68</ram:LineTotalAmount>
+                <ram:TaxBasisTotalAmount>2374.68</ram:TaxBasisTotalAmount>
+                <ram:TaxTotalAmount currencyID="EUR">451.19</ram:TaxTotalAmount>
+                <ram:GrandTotalAmount>2825.87</ram:GrandTotalAmount>
+                <ram:DuePayableAmount>2825.87</ram:DuePayableAmount>
+            </ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+        </ram:ApplicableHeaderTradeSettlement>
+    </rsm:SupplyChainTradeTransaction>
+</rsm:CrossIndustryInvoice>
--- a/tests/inputs/cii/01.09a-INVOICE_uncefact.xml
+++ b/tests/inputs/cii/01.09a-INVOICE_uncefact.xml
@@ -0,0 +1,145 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<rsm:CrossIndustryInvoice xmlns:rsm="urn:un:unece:uncefact:data:standard:CrossIndustryInvoice:100"
+                          xmlns:ram="urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100"
+                          xmlns:qdt="urn:un:unece:uncefact:data:standard:QualifiedDataType:100"
+                          xmlns:udt="urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100">
+    <rsm:ExchangedDocumentContext>
+        <ram:BusinessProcessSpecifiedDocumentContextParameter>
+            <ram:ID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</ram:ID>
+        </ram:BusinessProcessSpecifiedDocumentContextParameter>
+        <ram:GuidelineSpecifiedDocumentContextParameter>
+            <ram:ID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</ram:ID>
+        </ram:GuidelineSpecifiedDocumentContextParameter>
+    </rsm:ExchangedDocumentContext>
+    <rsm:ExchangedDocument>
+        <ram:ID>R123456</ram:ID>
+        <ram:TypeCode>380</ram:TypeCode>
+        <ram:IssueDateTime>
+            <udt:DateTimeString format="102">20160406</udt:DateTimeString>
+        </ram:IssueDateTime>
+    </rsm:ExchangedDocument>
+    <rsm:SupplyChainTradeTransaction>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>0010</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:SellerAssignedID>519306</ram:SellerAssignedID>
+                <ram:Name>Paketierung der Anwendung "Kofax 10.2" für 180 Geräte</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>6048</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">1</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>6048</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:ApplicableHeaderTradeAgreement>
+            <ram:BuyerReference>04011000-12350-85</ram:BuyerReference>
+            <ram:SellerTradeParty>
+                <ram:Name>[Seller name]</ram:Name>
+                <ram:Description>Amtsgericht […], Geschäftsführer: […], Sitz der Gesellschaft […], Aufsichtsratvorsitzender: […]</ram:Description>
+                <ram:SpecifiedLegalOrganization>
+                    <ram:ID>HRB 123</ram:ID>
+                    <ram:TradingBusinessName>[Seller trading name]</ram:TradingBusinessName>
+                </ram:SpecifiedLegalOrganization>
+                <ram:DefinedTradeContact>
+                    <ram:PersonName>Auskunft erteilt Ihnen</ram:PersonName>
+                    <ram:TelephoneUniversalCommunication>
+                        <ram:CompleteNumber>1234567890</ram:CompleteNumber>
+                    </ram:TelephoneUniversalCommunication>
+                    <ram:EmailURIUniversalCommunication>
+                        <ram:URIID>seller@test.de</ram:URIID>
+                    </ram:EmailURIUniversalCommunication>
+                </ram:DefinedTradeContact>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:LineOne>Postfach 123456</ram:LineOne>
+                    <ram:CityName>[Seller city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">seller@email.de</ram:URIID>
+                </ram:URIUniversalCommunication>
+                <ram:SpecifiedTaxRegistration>
+                    <ram:ID schemeID="VA">DE123456789</ram:ID>
+                </ram:SpecifiedTaxRegistration>
+            </ram:SellerTradeParty>
+            <ram:BuyerTradeParty>
+                <ram:Name>[Buyer name]</ram:Name>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:LineOne>[Buyer address line 1]</ram:LineOne>
+                    <ram:CityName>[Buyer city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">buyer@info.de</ram:URIID>
+                </ram:URIUniversalCommunication>
+            </ram:BuyerTradeParty>
+            <ram:SellerOrderReferencedDocument>
+                <ram:IssuerAssignedID>A123456789</ram:IssuerAssignedID>
+            </ram:SellerOrderReferencedDocument>
+            <ram:AdditionalReferencedDocument>
+                <ram:IssuerAssignedID>ANG987654321</ram:IssuerAssignedID>
+                <ram:TypeCode>50</ram:TypeCode>
+            </ram:AdditionalReferencedDocument>
+        </ram:ApplicableHeaderTradeAgreement>
+        <ram:ApplicableHeaderTradeDelivery/>
+        <ram:ApplicableHeaderTradeSettlement>
+            <ram:InvoiceCurrencyCode>EUR</ram:InvoiceCurrencyCode>
+            <ram:SpecifiedTradeSettlementPaymentMeans>
+                <ram:TypeCode>58</ram:TypeCode>
+                <ram:PayeePartyCreditorFinancialAccount>
+                    <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+                    <ram:IBANID>DE12500105170648489890</ram:IBANID>
+                </ram:PayeePartyCreditorFinancialAccount>
+            </ram:SpecifiedTradeSettlementPaymentMeans>
+            <ram:SpecifiedTradeSettlementPaymentMeans>
+                <ram:TypeCode>58</ram:TypeCode>
+                <ram:PayeePartyCreditorFinancialAccount>
+                    <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+                    <ram:IBANID>DE89370400440532013000</ram:IBANID>
+                </ram:PayeePartyCreditorFinancialAccount>
+            </ram:SpecifiedTradeSettlementPaymentMeans>
+            <ram:SpecifiedTradeSettlementPaymentMeans>
+                <ram:TypeCode>58</ram:TypeCode>
+                <ram:PayeePartyCreditorFinancialAccount>
+                    <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+                    <ram:IBANID>DE75512108001245126199</ram:IBANID>
+                </ram:PayeePartyCreditorFinancialAccount>
+            </ram:SpecifiedTradeSettlementPaymentMeans>
+            <ram:ApplicableTradeTax>
+                <ram:CalculatedAmount>1149.12</ram:CalculatedAmount>
+                <ram:TypeCode>VAT</ram:TypeCode>
+                <ram:BasisAmount>6048</ram:BasisAmount>
+                <ram:CategoryCode>S</ram:CategoryCode>
+                <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+            </ram:ApplicableTradeTax>
+            <ram:SpecifiedTradePaymentTerms>
+                <ram:DueDateDateTime>
+                    <udt:DateTimeString format="102">20160420</udt:DateTimeString>
+                </ram:DueDateDateTime>
+            </ram:SpecifiedTradePaymentTerms>
+            <ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+                <ram:LineTotalAmount>6048</ram:LineTotalAmount>
+                <ram:TaxBasisTotalAmount>6048</ram:TaxBasisTotalAmount>
+                <ram:TaxTotalAmount currencyID="EUR">1149.12</ram:TaxTotalAmount>
+                <ram:GrandTotalAmount>7197.12</ram:GrandTotalAmount>
+                <ram:DuePayableAmount>7197.12</ram:DuePayableAmount>
+            </ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+        </ram:ApplicableHeaderTradeSettlement>
+    </rsm:SupplyChainTradeTransaction>
+</rsm:CrossIndustryInvoice>
--- a/tests/inputs/cii/01.10a-INVOICE_uncefact.xml
+++ b/tests/inputs/cii/01.10a-INVOICE_uncefact.xml
@@ -0,0 +1,155 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<rsm:CrossIndustryInvoice xmlns:rsm="urn:un:unece:uncefact:data:standard:CrossIndustryInvoice:100"
+                          xmlns:ram="urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100"
+                          xmlns:qdt="urn:un:unece:uncefact:data:standard:QualifiedDataType:100"
+                          xmlns:udt="urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100">
+    <rsm:ExchangedDocumentContext>
+        <ram:BusinessProcessSpecifiedDocumentContextParameter>
+            <ram:ID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</ram:ID>
+        </ram:BusinessProcessSpecifiedDocumentContextParameter>
+        <ram:GuidelineSpecifiedDocumentContextParameter>
+            <ram:ID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</ram:ID>
+        </ram:GuidelineSpecifiedDocumentContextParameter>
+    </rsm:ExchangedDocumentContext>
+    <rsm:ExchangedDocument>
+        <ram:ID>Rechnungsnummer</ram:ID>
+        <ram:TypeCode>380</ram:TypeCode>
+        <ram:IssueDateTime>
+            <udt:DateTimeString format="102">20160627</udt:DateTimeString>
+        </ram:IssueDateTime>
+        <ram:IncludedNote>
+            <ram:Content>Wir liefern Ihnen ausschließlich zu unseren allgemeinen Geschäftsbedingungen (Stand Februar 2013). Diese werden Ihnen jederzeit auf Wunsch übersandt. Bei Aufträgen, basierend auf öffentlichen Vergaben, gelten die ggf. vereinbarten abweichenden Liefer- und Zahungsbedingungen des Auftraggebers.</ram:Content>
+            <ram:SubjectCode>ADU</ram:SubjectCode>
+        </ram:IncludedNote>
+    </rsm:ExchangedDocument>
+    <rsm:SupplyChainTradeTransaction>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>1</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:SellerAssignedID>AL281982</ram:SellerAssignedID>
+                <ram:Name>Drehstuhl</ram:Name>
+                <ram:Description>Sitz: 10-301 blau, Rücken: 10-301 blau, ….</ram:Description>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>218</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">10</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>2180</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:ApplicableHeaderTradeAgreement>
+            <ram:BuyerReference>04011000-12350-85</ram:BuyerReference>
+            <ram:SellerTradeParty>
+                <ram:Name>[Seller name]</ram:Name>
+                <ram:Description>Sitz der Gesellschaft: […], Registergericht: […], Geschäftsführer: […]</ram:Description>
+                <ram:SpecifiedLegalOrganization>
+                    <ram:ID>HRB 123456</ram:ID>
+                    <ram:TradingBusinessName>[Seller trading name]</ram:TradingBusinessName>
+                </ram:SpecifiedLegalOrganization>
+                <ram:DefinedTradeContact>
+                    <ram:PersonName>Berater / Sachbearbeiter</ram:PersonName>
+                    <ram:TelephoneUniversalCommunication>
+                        <ram:CompleteNumber>+49(0)1234-0</ram:CompleteNumber>
+                    </ram:TelephoneUniversalCommunication>
+                    <ram:EmailURIUniversalCommunication>
+                        <ram:URIID>info@seller.de</ram:URIID>
+                    </ram:EmailURIUniversalCommunication>
+                </ram:DefinedTradeContact>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:LineOne>[Seller address line 1]</ram:LineOne>
+                    <ram:CityName>[Seller city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">seller@email.de</ram:URIID>
+                </ram:URIUniversalCommunication>
+                <ram:SpecifiedTaxRegistration>
+                    <ram:ID schemeID="VA">DE123456789</ram:ID>
+                </ram:SpecifiedTaxRegistration>
+                <ram:SpecifiedTaxRegistration>
+                    <ram:ID schemeID="FC">123/456/789</ram:ID>
+                </ram:SpecifiedTaxRegistration>
+            </ram:SellerTradeParty>
+            <ram:BuyerTradeParty>
+                <ram:Name>[Buyer name]</ram:Name>
+                <ram:DefinedTradeContact>
+                    <ram:PersonName>Ansprechpartner Käufer</ram:PersonName>
+                </ram:DefinedTradeContact>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:LineOne>[Buyer address line 1]</ram:LineOne>
+                    <ram:CityName>[Buyer city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">buyer@info.de</ram:URIID>
+                </ram:URIUniversalCommunication>
+            </ram:BuyerTradeParty>
+            <ram:SellerOrderReferencedDocument>
+                <ram:IssuerAssignedID>Auftragsnummer</ram:IssuerAssignedID>
+            </ram:SellerOrderReferencedDocument>
+        </ram:ApplicableHeaderTradeAgreement>
+        <ram:ApplicableHeaderTradeDelivery>
+            <ram:ShipToTradeParty>
+                <ram:Name>Außenstelle XY</ram:Name>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:LineOne>[Deliver to address line 1]</ram:LineOne>
+                    <ram:CityName>[Deliver to city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+            </ram:ShipToTradeParty>
+        </ram:ApplicableHeaderTradeDelivery>
+        <ram:ApplicableHeaderTradeSettlement>
+            <ram:InvoiceCurrencyCode>EUR</ram:InvoiceCurrencyCode>
+            <ram:SpecifiedTradeSettlementPaymentMeans>
+                <ram:TypeCode>58</ram:TypeCode>
+                <ram:PayeePartyCreditorFinancialAccount>
+                     <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+                    <ram:IBANID>DE75512108001245126199</ram:IBANID>
+                </ram:PayeePartyCreditorFinancialAccount>
+            </ram:SpecifiedTradeSettlementPaymentMeans>
+            <ram:SpecifiedTradeSettlementPaymentMeans>
+                <ram:TypeCode>58</ram:TypeCode>
+                <ram:PayeePartyCreditorFinancialAccount>
+                    <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+                    <ram:IBANID>DE12500105170648489890</ram:IBANID>
+                </ram:PayeePartyCreditorFinancialAccount>
+            </ram:SpecifiedTradeSettlementPaymentMeans>
+            <ram:ApplicableTradeTax>
+                <ram:CalculatedAmount>414.2</ram:CalculatedAmount>
+                <ram:TypeCode>VAT</ram:TypeCode>
+                <ram:BasisAmount>2180</ram:BasisAmount>
+                <ram:CategoryCode>S</ram:CategoryCode>
+                <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+            </ram:ApplicableTradeTax>
+            <ram:SpecifiedTradePaymentTerms>
+                <ram:Description>#SKONTO#TAGE=7#PROZENT=2.00#
+#SKONTO#TAGE=14#PROZENT=1.00#
+#SKONTO#TAGE=30#PROZENT=0.00#</ram:Description>
+            </ram:SpecifiedTradePaymentTerms>
+            <ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+                <ram:LineTotalAmount>2180</ram:LineTotalAmount>
+                <ram:TaxBasisTotalAmount>2180</ram:TaxBasisTotalAmount>
+                <ram:TaxTotalAmount currencyID="EUR">414.2</ram:TaxTotalAmount>
+                <ram:GrandTotalAmount>2594.2</ram:GrandTotalAmount>
+                <ram:DuePayableAmount>2594.2</ram:DuePayableAmount>
+            </ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+        </ram:ApplicableHeaderTradeSettlement>
+    </rsm:SupplyChainTradeTransaction>
+</rsm:CrossIndustryInvoice>
--- a/tests/inputs/cii/01.11a-INVOICE_uncefact.xml
+++ b/tests/inputs/cii/01.11a-INVOICE_uncefact.xml
@@ -0,0 +1,195 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<rsm:CrossIndustryInvoice xmlns:rsm="urn:un:unece:uncefact:data:standard:CrossIndustryInvoice:100"
+                          xmlns:ram="urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100"
+                          xmlns:qdt="urn:un:unece:uncefact:data:standard:QualifiedDataType:100"
+                          xmlns:udt="urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100">
+    <rsm:ExchangedDocumentContext>
+        <ram:BusinessProcessSpecifiedDocumentContextParameter>
+            <ram:ID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</ram:ID>
+        </ram:BusinessProcessSpecifiedDocumentContextParameter>
+        <ram:GuidelineSpecifiedDocumentContextParameter>
+            <ram:ID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</ram:ID>
+        </ram:GuidelineSpecifiedDocumentContextParameter>
+    </rsm:ExchangedDocumentContext>
+    <rsm:ExchangedDocument>
+        <ram:ID>Rechnungsnummer</ram:ID>
+        <ram:TypeCode>380</ram:TypeCode>
+        <ram:IssueDateTime>
+            <udt:DateTimeString format="102">20160223</udt:DateTimeString>
+        </ram:IssueDateTime>
+    </rsm:ExchangedDocument>
+    <rsm:SupplyChainTradeTransaction>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>0010</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:SellerAssignedID>CON-1401888</ram:SellerAssignedID>
+                <ram:Name>Huawei E5573 Mobiler 4G Hotspot sw</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>71.42</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">3</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>214.26</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>0020</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:SellerAssignedID>51001</ram:SellerAssignedID>
+                <ram:Name>Beschaffungspauschale</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>10.71</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">1</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>10.71</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>0030</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:SellerAssignedID>51010</ram:SellerAssignedID>
+                <ram:Name>Lieferkosten</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>9.8</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">1</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>9.8</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:ApplicableHeaderTradeAgreement>
+            <ram:BuyerReference>04011000-12352-79</ram:BuyerReference>
+            <ram:SellerTradeParty>
+                <ram:Name>[Seller name]</ram:Name>
+                <ram:Description>Amtsgericht […], Geschäftsführer: […], Sitz der Gesellschaft […], Aufsichtsratvorsitzender: […]</ram:Description>
+                <ram:SpecifiedLegalOrganization>
+                    <ram:ID>HRB 123</ram:ID>
+                    <ram:TradingBusinessName>[Seller trading name]</ram:TradingBusinessName>
+                </ram:SpecifiedLegalOrganization>
+                <ram:DefinedTradeContact>
+                    <ram:PersonName>Auskunft erteilt Ihnen</ram:PersonName>
+                    <ram:TelephoneUniversalCommunication>
+                        <ram:CompleteNumber>1234567890</ram:CompleteNumber>
+                    </ram:TelephoneUniversalCommunication>
+                    <ram:EmailURIUniversalCommunication>
+                        <ram:URIID>seller@test.de</ram:URIID>
+                    </ram:EmailURIUniversalCommunication>
+                </ram:DefinedTradeContact>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:LineOne>[Seller address line 1]</ram:LineOne>
+                    <ram:CityName>[Seller city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">seller@email.de</ram:URIID>
+                </ram:URIUniversalCommunication>
+                <ram:SpecifiedTaxRegistration>
+                    <ram:ID schemeID="VA">DE123456789</ram:ID>
+                </ram:SpecifiedTaxRegistration>
+            </ram:SellerTradeParty>
+            <ram:BuyerTradeParty>
+                <ram:Name>[Buyer name]</ram:Name>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:LineOne>[Buyer address line 1]</ram:LineOne>
+                    <ram:CityName>[Buyer city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">buyer@info.de</ram:URIID>
+                </ram:URIUniversalCommunication>
+            </ram:BuyerTradeParty>
+            <ram:SellerOrderReferencedDocument>
+                <ram:IssuerAssignedID>Auftragsnummer</ram:IssuerAssignedID>
+            </ram:SellerOrderReferencedDocument>
+        </ram:ApplicableHeaderTradeAgreement>
+        <ram:ApplicableHeaderTradeDelivery/>
+        <ram:ApplicableHeaderTradeSettlement>
+            <ram:InvoiceCurrencyCode>EUR</ram:InvoiceCurrencyCode>
+            <ram:SpecifiedTradeSettlementPaymentMeans>
+                <ram:TypeCode>58</ram:TypeCode>
+                <ram:PayeePartyCreditorFinancialAccount>
+                    <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+                    <ram:IBANID>DE12500105170648489890</ram:IBANID>
+                </ram:PayeePartyCreditorFinancialAccount>
+            </ram:SpecifiedTradeSettlementPaymentMeans>
+            <ram:SpecifiedTradeSettlementPaymentMeans>
+                <ram:TypeCode>58</ram:TypeCode>
+                <ram:PayeePartyCreditorFinancialAccount>
+                    <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+                    <ram:IBANID>DE89370400440532013000</ram:IBANID>
+                </ram:PayeePartyCreditorFinancialAccount>
+            </ram:SpecifiedTradeSettlementPaymentMeans>
+            <ram:SpecifiedTradeSettlementPaymentMeans>
+                <ram:TypeCode>58</ram:TypeCode>
+                <ram:PayeePartyCreditorFinancialAccount>
+                    <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+                    <ram:IBANID>DE75512108001245126199</ram:IBANID>
+                </ram:PayeePartyCreditorFinancialAccount>
+            </ram:SpecifiedTradeSettlementPaymentMeans>
+            <ram:ApplicableTradeTax>
+                <ram:CalculatedAmount>44.61</ram:CalculatedAmount>
+                <ram:TypeCode>VAT</ram:TypeCode>
+                <ram:BasisAmount>234.77</ram:BasisAmount>
+                <ram:CategoryCode>S</ram:CategoryCode>
+                <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+            </ram:ApplicableTradeTax>
+            <ram:SpecifiedTradePaymentTerms>
+                <ram:DueDateDateTime>
+                    <udt:DateTimeString format="102">20160308</udt:DateTimeString>
+                </ram:DueDateDateTime>
+            </ram:SpecifiedTradePaymentTerms>
+            <ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+                <ram:LineTotalAmount>234.77</ram:LineTotalAmount>
+                <ram:TaxBasisTotalAmount>234.77</ram:TaxBasisTotalAmount>
+                <ram:TaxTotalAmount currencyID="EUR">44.61</ram:TaxTotalAmount>
+                <ram:GrandTotalAmount>279.38</ram:GrandTotalAmount>
+                <ram:DuePayableAmount>279.38</ram:DuePayableAmount>
+            </ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+        </ram:ApplicableHeaderTradeSettlement>
+    </rsm:SupplyChainTradeTransaction>
+</rsm:CrossIndustryInvoice>
--- a/tests/inputs/cii/01.12a-INVOICE_uncefact.xml
+++ b/tests/inputs/cii/01.12a-INVOICE_uncefact.xml
@@ -0,0 +1,249 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<rsm:CrossIndustryInvoice xmlns:rsm="urn:un:unece:uncefact:data:standard:CrossIndustryInvoice:100"
+                          xmlns:ram="urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100"
+                          xmlns:qdt="urn:un:unece:uncefact:data:standard:QualifiedDataType:100"
+                          xmlns:udt="urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100">
+    <rsm:ExchangedDocumentContext>
+        <ram:BusinessProcessSpecifiedDocumentContextParameter>
+            <ram:ID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</ram:ID>
+        </ram:BusinessProcessSpecifiedDocumentContextParameter>
+        <ram:GuidelineSpecifiedDocumentContextParameter>
+            <ram:ID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</ram:ID>
+        </ram:GuidelineSpecifiedDocumentContextParameter>
+    </rsm:ExchangedDocumentContext>
+    <rsm:ExchangedDocument>
+        <ram:ID>Rechnungsnummer</ram:ID>
+        <ram:TypeCode>380</ram:TypeCode>
+        <ram:IssueDateTime>
+            <udt:DateTimeString format="102">20160302</udt:DateTimeString>
+        </ram:IssueDateTime>
+    </rsm:ExchangedDocument>
+    <rsm:SupplyChainTradeTransaction>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>0010</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:SellerAssignedID>CUF-90541432</ram:SellerAssignedID>
+                <ram:Name>Keyboard/Maus - weiß</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>12.52</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">1</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>12.52</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>0020</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:SellerAssignedID>CUF-90597289</ram:SellerAssignedID>
+                <ram:Name>MX Master</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>63.45</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">2</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>126.9</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>0030</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:SellerAssignedID>CUF-90271291</ram:SellerAssignedID>
+                <ram:Name>Tastatur Deutsch</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>47.82</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">2</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>95.64</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>0040</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:SellerAssignedID>51001</ram:SellerAssignedID>
+                <ram:Name>Beschaffungspauschale</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>11.75</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">1</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>11.75</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>0050</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:SellerAssignedID>51010</ram:SellerAssignedID>
+                <ram:Name>Lieferkosten</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>9.8</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">1</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>9.8</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:ApplicableHeaderTradeAgreement>
+            <ram:BuyerReference>04011000-12353-76</ram:BuyerReference>
+            <ram:SellerTradeParty>
+                <ram:Name>[Seller name]</ram:Name>
+                <ram:Description>Amtsgericht […], Geschäftsführer: […], Sitz der Gesellschaft […], Aufsichtsratvorsitzender: […]</ram:Description>
+                <ram:SpecifiedLegalOrganization>
+                    <ram:ID>HRB 123</ram:ID>
+                    <ram:TradingBusinessName>[Seller trading name]</ram:TradingBusinessName>
+                </ram:SpecifiedLegalOrganization>
+                <ram:DefinedTradeContact>
+                    <ram:PersonName>Auskunft erteilt Ihnen</ram:PersonName>
+                    <ram:TelephoneUniversalCommunication>
+                        <ram:CompleteNumber>1234567890</ram:CompleteNumber>
+                    </ram:TelephoneUniversalCommunication>
+                    <ram:EmailURIUniversalCommunication>
+                        <ram:URIID>seller@test.de</ram:URIID>
+                    </ram:EmailURIUniversalCommunication>
+                </ram:DefinedTradeContact>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:LineOne>[Seller address line 1]</ram:LineOne>
+                    <ram:CityName>[Seller city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">seller@email.de</ram:URIID>
+                </ram:URIUniversalCommunication>
+                <ram:SpecifiedTaxRegistration>
+                    <ram:ID schemeID="VA">DE123456789</ram:ID>
+                </ram:SpecifiedTaxRegistration>
+            </ram:SellerTradeParty>
+            <ram:BuyerTradeParty>
+                <ram:Name>[Buyer name]</ram:Name>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:LineOne>[Buyer address line 1]</ram:LineOne>
+                    <ram:CityName>[Buyer city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">buyer@info.de</ram:URIID>
+                </ram:URIUniversalCommunication>
+            </ram:BuyerTradeParty>
+            <ram:SellerOrderReferencedDocument>
+                <ram:IssuerAssignedID>Auftragsnummer</ram:IssuerAssignedID>
+            </ram:SellerOrderReferencedDocument>
+        </ram:ApplicableHeaderTradeAgreement>
+        <ram:ApplicableHeaderTradeDelivery/>
+        <ram:ApplicableHeaderTradeSettlement>
+            <ram:InvoiceCurrencyCode>EUR</ram:InvoiceCurrencyCode>
+            <ram:SpecifiedTradeSettlementPaymentMeans>
+                <ram:TypeCode>58</ram:TypeCode>
+                <ram:PayeePartyCreditorFinancialAccount>
+                    <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+                    <ram:IBANID>DE12500105170648489890</ram:IBANID>
+                </ram:PayeePartyCreditorFinancialAccount>
+            </ram:SpecifiedTradeSettlementPaymentMeans>
+            <ram:SpecifiedTradeSettlementPaymentMeans>
+                <ram:TypeCode>58</ram:TypeCode>
+                <ram:PayeePartyCreditorFinancialAccount>
+                    <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+                    <ram:IBANID>DE89370400440532013000</ram:IBANID>
+                </ram:PayeePartyCreditorFinancialAccount>
+            </ram:SpecifiedTradeSettlementPaymentMeans>
+            <ram:SpecifiedTradeSettlementPaymentMeans>
+                <ram:TypeCode>58</ram:TypeCode>
+                <ram:PayeePartyCreditorFinancialAccount>
+                    <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+                    <ram:IBANID>DE75512108001245126199</ram:IBANID>
+                </ram:PayeePartyCreditorFinancialAccount>
+            </ram:SpecifiedTradeSettlementPaymentMeans>
+            <ram:ApplicableTradeTax>
+                <ram:CalculatedAmount>48.76</ram:CalculatedAmount>
+                <ram:TypeCode>VAT</ram:TypeCode>
+                <ram:BasisAmount>256.61</ram:BasisAmount>
+                <ram:CategoryCode>S</ram:CategoryCode>
+                <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+            </ram:ApplicableTradeTax>
+            <ram:SpecifiedTradePaymentTerms>
+                <ram:DueDateDateTime>
+                    <udt:DateTimeString format="102">20160316</udt:DateTimeString>
+                </ram:DueDateDateTime>
+            </ram:SpecifiedTradePaymentTerms>
+            <ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+                <ram:LineTotalAmount>256.61</ram:LineTotalAmount>
+                <ram:TaxBasisTotalAmount>256.61</ram:TaxBasisTotalAmount>
+                <ram:TaxTotalAmount currencyID="EUR">48.76</ram:TaxTotalAmount>
+                <ram:GrandTotalAmount>305.37</ram:GrandTotalAmount>
+                <ram:DuePayableAmount>305.37</ram:DuePayableAmount>
+            </ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+        </ram:ApplicableHeaderTradeSettlement>
+    </rsm:SupplyChainTradeTransaction>
+</rsm:CrossIndustryInvoice>
--- a/tests/inputs/cii/01.13a-INVOICE_uncefact.xml
+++ b/tests/inputs/cii/01.13a-INVOICE_uncefact.xml
@@ -0,0 +1,396 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<rsm:CrossIndustryInvoice xmlns:rsm="urn:un:unece:uncefact:data:standard:CrossIndustryInvoice:100"
+                          xmlns:ram="urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100"
+                          xmlns:qdt="urn:un:unece:uncefact:data:standard:QualifiedDataType:100"
+                          xmlns:udt="urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100">
+    <rsm:ExchangedDocumentContext>
+        <ram:BusinessProcessSpecifiedDocumentContextParameter>
+            <ram:ID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</ram:ID>
+        </ram:BusinessProcessSpecifiedDocumentContextParameter>
+        <ram:GuidelineSpecifiedDocumentContextParameter>
+            <ram:ID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</ram:ID>
+        </ram:GuidelineSpecifiedDocumentContextParameter>
+    </rsm:ExchangedDocumentContext>
+    <rsm:ExchangedDocument>
+        <ram:ID>Rechnungsnummer</ram:ID>
+        <ram:TypeCode>380</ram:TypeCode>
+        <ram:IssueDateTime>
+            <udt:DateTimeString format="102">20150109</udt:DateTimeString>
+        </ram:IssueDateTime>
+        <ram:IncludedNote>
+            <ram:Content>Bearbeitungszeitraum: Dezember 2014/ 5.01.-09.01.2015 Abschlagsrechnung A 9</ram:Content>
+            <ram:SubjectCode>ADU</ram:SubjectCode>
+        </ram:IncludedNote>
+    </rsm:ExchangedDocument>
+    <rsm:SupplyChainTradeTransaction>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>7</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:Name>Aussetzen der Kanten Neorokokosofa laut N2</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>400</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">1</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>400</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>8</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:Name>Aussetzen der Kanten am Sofa um 1780 laut N2</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>240</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">1</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>240</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>9</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:Name>Analyse Pigment</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>120</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">1</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>120</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>10</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:Name>Querschliff</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>70</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">1</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>70</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>5.2</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:Name>Furnierniederlegung 50 %</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>140</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">1</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>140</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>2</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:Name>Transport 25 %</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>400</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">1</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>400</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>7.1</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:Name>Sofa um 1780 Reinigung der Oberfläche</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>280</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">1</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>280</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>7.2</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:Name>Konstruktive Ertüchtigung, Ergänzung eines Beines</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>480</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">1</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>480</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>7.3</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:Name>Abnahme der rotbraunen Fassung 50 %</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>1600</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">1</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>1600</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>9.1</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:Name>Neorokokosofo konstruktive Ertüchtigung</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>400</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">1</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>400</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>9.2</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:Name>Reinigung, Fassungssicherung 50 %</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>1200</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">1</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>1200</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:ApplicableHeaderTradeAgreement>
+            <ram:BuyerReference>04011000-12354-73</ram:BuyerReference>
+            <ram:SellerTradeParty>
+                <ram:Name>[Seller name]</ram:Name>
+                 <ram:SpecifiedLegalOrganization >
+                     <ram:ID>HRB 123</ram:ID>
+                </ram:SpecifiedLegalOrganization>
+                <ram:DefinedTradeContact>
+                    <ram:PersonName>[Seller contact person]</ram:PersonName>
+                    <ram:TelephoneUniversalCommunication>
+                        <ram:CompleteNumber>1234567890</ram:CompleteNumber>
+                    </ram:TelephoneUniversalCommunication>
+                    <ram:EmailURIUniversalCommunication>
+                        <ram:URIID>info@seller.de</ram:URIID>
+                    </ram:EmailURIUniversalCommunication>
+                </ram:DefinedTradeContact>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:LineOne>[Seller address line 1]</ram:LineOne>
+                    <ram:CityName>[Seller city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">seller@email.de</ram:URIID>
+                </ram:URIUniversalCommunication>
+                <ram:SpecifiedTaxRegistration>
+                    <ram:ID schemeID="VA">DE123456789</ram:ID>
+                </ram:SpecifiedTaxRegistration>
+                <ram:SpecifiedTaxRegistration>
+                    <ram:ID schemeID="FC">123/456/789</ram:ID>
+                </ram:SpecifiedTaxRegistration>
+            </ram:SellerTradeParty>
+            <ram:BuyerTradeParty>
+                <ram:Name>[Buyer name]</ram:Name>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:LineOne>[Buyer address line 1]</ram:LineOne>
+                    <ram:CityName>[Buyer city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">buyer@info.de</ram:URIID>
+                </ram:URIUniversalCommunication>
+            </ram:BuyerTradeParty>
+            <ram:SellerOrderReferencedDocument>
+                <ram:IssuerAssignedID>Auftragsnummer</ram:IssuerAssignedID>
+            </ram:SellerOrderReferencedDocument>
+            <ram:SpecifiedProcuringProject>
+                <ram:ID>PR12345678</ram:ID>
+                <ram:Name>Project reference</ram:Name>
+            </ram:SpecifiedProcuringProject>
+        </ram:ApplicableHeaderTradeAgreement>
+        <ram:ApplicableHeaderTradeDelivery/>
+        <ram:ApplicableHeaderTradeSettlement>
+            <ram:InvoiceCurrencyCode>EUR</ram:InvoiceCurrencyCode>
+            <ram:SpecifiedTradeSettlementPaymentMeans>
+                <ram:TypeCode>58</ram:TypeCode>
+                <ram:PayeePartyCreditorFinancialAccount>
+                    <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+                    <ram:IBANID>DE75512108001245126199</ram:IBANID>
+                </ram:PayeePartyCreditorFinancialAccount>
+            </ram:SpecifiedTradeSettlementPaymentMeans>
+            <ram:ApplicableTradeTax>
+                <ram:CalculatedAmount>1012.7</ram:CalculatedAmount>
+                <ram:TypeCode>VAT</ram:TypeCode>
+                <ram:BasisAmount>5330</ram:BasisAmount>
+                <ram:CategoryCode>S</ram:CategoryCode>
+                <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+            </ram:ApplicableTradeTax>
+            <ram:SpecifiedTradePaymentTerms>
+                <ram:Description>Bitte überweisen Sie bis zum 24.01.2015 auf das unten aufgeführte Konto.</ram:Description>
+                <ram:DueDateDateTime>
+                    <udt:DateTimeString format="102">20150124</udt:DateTimeString>
+                </ram:DueDateDateTime>
+            </ram:SpecifiedTradePaymentTerms>
+            <ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+                <ram:LineTotalAmount>5330</ram:LineTotalAmount>
+                <ram:TaxBasisTotalAmount>5330</ram:TaxBasisTotalAmount>
+                <ram:TaxTotalAmount currencyID="EUR">1012.7</ram:TaxTotalAmount>
+                <ram:GrandTotalAmount>6342.7</ram:GrandTotalAmount>
+                <ram:DuePayableAmount>6342.7</ram:DuePayableAmount>
+            </ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+        </ram:ApplicableHeaderTradeSettlement>
+    </rsm:SupplyChainTradeTransaction>
+</rsm:CrossIndustryInvoice>
--- a/tests/inputs/cii/01.14a-INVOICE_uncefact.xml
+++ b/tests/inputs/cii/01.14a-INVOICE_uncefact.xml
@@ -0,0 +1,211 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<rsm:CrossIndustryInvoice xmlns:rsm="urn:un:unece:uncefact:data:standard:CrossIndustryInvoice:100"
+                          xmlns:ram="urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100"
+                          xmlns:qdt="urn:un:unece:uncefact:data:standard:QualifiedDataType:100"
+                          xmlns:udt="urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100">
+    <rsm:ExchangedDocumentContext>
+        <ram:BusinessProcessSpecifiedDocumentContextParameter>
+            <ram:ID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</ram:ID>
+        </ram:BusinessProcessSpecifiedDocumentContextParameter>
+        <ram:GuidelineSpecifiedDocumentContextParameter>
+            <ram:ID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</ram:ID>
+        </ram:GuidelineSpecifiedDocumentContextParameter>
+    </rsm:ExchangedDocumentContext>
+    <rsm:ExchangedDocument>
+        <ram:ID>1234567</ram:ID>
+        <ram:TypeCode>380</ram:TypeCode>
+        <ram:IssueDateTime>
+            <udt:DateTimeString format="102">20180413</udt:DateTimeString>
+        </ram:IssueDateTime>
+        <ram:IncludedNote>
+            <ram:Content>Invoice Note Description</ram:Content>
+            <ram:SubjectCode>AAC</ram:SubjectCode>
+        </ram:IncludedNote>
+    </rsm:ExchangedDocument>
+    <rsm:SupplyChainTradeTransaction>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>1</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:Name>Beratung</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>143.75</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">33</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>4743.75</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>2</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:Name>Beratung</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>143.75</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">42</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>6037.5</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:ApplicableHeaderTradeAgreement>
+            <ram:BuyerReference>90000000-03083-72</ram:BuyerReference>
+            <ram:SellerTradeParty>
+                <ram:Name>[Seller name]</ram:Name>
+                <ram:SpecifiedLegalOrganization>
+                    <ram:ID>HRB 123</ram:ID>
+                </ram:SpecifiedLegalOrganization>
+                <ram:DefinedTradeContact>
+                    <ram:PersonName>Tim Tester</ram:PersonName>
+                    <ram:TelephoneUniversalCommunication>
+                        <ram:CompleteNumber>012 3456789</ram:CompleteNumber>
+                    </ram:TelephoneUniversalCommunication>
+                    <ram:EmailURIUniversalCommunication>
+                        <ram:URIID>tim.tester@test.com</ram:URIID>
+                    </ram:EmailURIUniversalCommunication>
+                </ram:DefinedTradeContact>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:CityName>[Seller city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">seller@email.de</ram:URIID>
+                </ram:URIUniversalCommunication>
+                <ram:SpecifiedTaxRegistration>
+                    <ram:ID schemeID="VA">ATU123456789</ram:ID>
+                </ram:SpecifiedTaxRegistration>
+            </ram:SellerTradeParty>
+            <ram:BuyerTradeParty>
+                <ram:ID>138</ram:ID>
+                <ram:Name>[Buyer name]</ram:Name>
+                <ram:SpecifiedLegalOrganization>
+                    <ram:ID>HRB 3456</ram:ID>
+                </ram:SpecifiedLegalOrganization>
+                <ram:DefinedTradeContact>
+                    <ram:PersonName>Tina Tester</ram:PersonName>
+                    <ram:TelephoneUniversalCommunication>
+                        <ram:CompleteNumber>0800 123456</ram:CompleteNumber>
+                    </ram:TelephoneUniversalCommunication>
+                    <ram:EmailURIUniversalCommunication>
+                        <ram:URIID>tester@test.de</ram:URIID>
+                    </ram:EmailURIUniversalCommunication>
+                </ram:DefinedTradeContact>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>98765</ram:PostcodeCode>
+                    <ram:CityName>[Buyer city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">buyer@info.de</ram:URIID>
+                </ram:URIUniversalCommunication>
+                <ram:SpecifiedTaxRegistration>
+                    <ram:ID schemeID="VA">DE12345ABC</ram:ID>
+                </ram:SpecifiedTaxRegistration>
+            </ram:BuyerTradeParty>
+            <ram:SellerTaxRepresentativeTradeParty>
+                <ram:Name>[Seller tax representative name]</ram:Name>
+                <ram:PostalTradeAddress>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:SpecifiedTaxRegistration>
+                    <ram:ID schemeID="VA">DE124567</ram:ID>
+                </ram:SpecifiedTaxRegistration>
+            </ram:SellerTaxRepresentativeTradeParty>
+            <ram:SellerOrderReferencedDocument>
+                <ram:IssuerAssignedID>ABC123456789</ram:IssuerAssignedID>
+            </ram:SellerOrderReferencedDocument>
+            <ram:BuyerOrderReferencedDocument>
+                <ram:IssuerAssignedID>65002278</ram:IssuerAssignedID>
+            </ram:BuyerOrderReferencedDocument>
+        </ram:ApplicableHeaderTradeAgreement>
+        <ram:ApplicableHeaderTradeDelivery>
+            <ram:ShipToTradeParty>
+                <ram:ID>68</ram:ID>
+                <ram:Name>[Deliver to party name]</ram:Name>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>98765</ram:PostcodeCode>
+                    <ram:LineOne>[Deliver to street]</ram:LineOne>
+                    <ram:LineTwo>4. OG</ram:LineTwo>
+                    <ram:CityName>[Deliver to city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                    <ram:CountrySubDivisionName>Bayern</ram:CountrySubDivisionName>
+                </ram:PostalTradeAddress>
+            </ram:ShipToTradeParty>
+            <ram:ActualDeliverySupplyChainEvent>
+                <ram:OccurrenceDateTime>
+                    <udt:DateTimeString format="102">20180413</udt:DateTimeString>
+                </ram:OccurrenceDateTime>
+            </ram:ActualDeliverySupplyChainEvent>
+        </ram:ApplicableHeaderTradeDelivery>
+        <ram:ApplicableHeaderTradeSettlement>
+            <ram:PaymentReference>Deb. 12345 / Fact. 9876543</ram:PaymentReference>
+            <ram:InvoiceCurrencyCode>EUR</ram:InvoiceCurrencyCode>
+            <ram:PayeeTradeParty>
+                <ram:ID>74</ram:ID>
+                <ram:Name>[Payee name]</ram:Name>
+            </ram:PayeeTradeParty>
+            <ram:SpecifiedTradeSettlementPaymentMeans>
+                <ram:TypeCode>58</ram:TypeCode>
+                <ram:PayeePartyCreditorFinancialAccount>
+                    <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+                    <ram:IBANID>DE75512108001245126199</ram:IBANID>
+                </ram:PayeePartyCreditorFinancialAccount>
+            </ram:SpecifiedTradeSettlementPaymentMeans>
+            <ram:ApplicableTradeTax>
+                <ram:CalculatedAmount>2048.44</ram:CalculatedAmount>
+                <ram:TypeCode>VAT</ram:TypeCode>
+                <ram:BasisAmount>10781.25</ram:BasisAmount>
+                <ram:CategoryCode>S</ram:CategoryCode>
+                <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+            </ram:ApplicableTradeTax>
+            <ram:BillingSpecifiedPeriod>
+                <ram:StartDateTime>
+                    <udt:DateTimeString format="102">20180413</udt:DateTimeString>
+                </ram:StartDateTime>
+                <ram:EndDateTime>
+                    <udt:DateTimeString format="102">20180413</udt:DateTimeString>
+                </ram:EndDateTime>
+            </ram:BillingSpecifiedPeriod>
+            <ram:SpecifiedTradePaymentTerms>
+                <ram:DueDateDateTime>
+                    <udt:DateTimeString format="102">20180413</udt:DateTimeString>
+                </ram:DueDateDateTime>
+            </ram:SpecifiedTradePaymentTerms>
+            <ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+                <ram:LineTotalAmount>10781.25</ram:LineTotalAmount>
+                <ram:TaxBasisTotalAmount>10781.25</ram:TaxBasisTotalAmount>
+                <ram:TaxTotalAmount currencyID="EUR">2048.44</ram:TaxTotalAmount>
+                <ram:GrandTotalAmount>12829.69</ram:GrandTotalAmount>
+                <ram:DuePayableAmount>12829.69</ram:DuePayableAmount>
+            </ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+        </ram:ApplicableHeaderTradeSettlement>
+    </rsm:SupplyChainTradeTransaction>
+</rsm:CrossIndustryInvoice>
--- a/tests/inputs/cii/01.15a-INVOICE_uncefact.xml
+++ b/tests/inputs/cii/01.15a-INVOICE_uncefact.xml
--- a/tests/inputs/cii/01.17a-INVOICE_uncefact.xml
+++ b/tests/inputs/cii/01.17a-INVOICE_uncefact.xml
@@ -0,0 +1,172 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<rsm:CrossIndustryInvoice xmlns:rsm="urn:un:unece:uncefact:data:standard:CrossIndustryInvoice:100"
+                          xmlns:ram="urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100"
+                          xmlns:qdt="urn:un:unece:uncefact:data:standard:QualifiedDataType:100"
+                          xmlns:udt="urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100">
+    <rsm:ExchangedDocumentContext>
+        <ram:BusinessProcessSpecifiedDocumentContextParameter>
+            <ram:ID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</ram:ID>
+        </ram:BusinessProcessSpecifiedDocumentContextParameter>
+        <ram:GuidelineSpecifiedDocumentContextParameter>
+            <ram:ID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</ram:ID>
+        </ram:GuidelineSpecifiedDocumentContextParameter>
+    </rsm:ExchangedDocumentContext>
+    <rsm:ExchangedDocument>
+        <ram:ID>123456XX</ram:ID>
+        <ram:TypeCode>380</ram:TypeCode>
+        <ram:IssueDateTime>
+            <udt:DateTimeString format="102">20160404</udt:DateTimeString>
+        </ram:IssueDateTime>
+        <ram:IncludedNote>
+            <ram:Content>Es gelten unsere Allgem. Geschäftsbedingungen, die Sie unter […] finden.</ram:Content>
+            <ram:SubjectCode>ADU</ram:SubjectCode>
+        </ram:IncludedNote>
+    </rsm:ExchangedDocument>
+    <rsm:SupplyChainTradeTransaction>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>Zeitschrift [...]</ram:LineID>
+                <ram:IncludedNote>
+                    <ram:Content>Die letzte Lieferung im Rahmen des abgerechneten Abonnements erfolgt in 12/2016 Lieferung erfolgt / erfolgte direkt vom Verlag</ram:Content>
+                </ram:IncludedNote>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:SellerAssignedID>246</ram:SellerAssignedID>
+                <ram:Name>Zeitschrift [...]</ram:Name>
+                <ram:Description>Zeitschrift Inland</ram:Description>
+                <ram:DesignatedProductClassification>
+                    <ram:ClassCode listID="IB">0721-880X</ram:ClassCode>
+                </ram:DesignatedProductClassification>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:BuyerOrderReferencedDocument>
+                    <ram:LineID>6171175.1</ram:LineID>
+                </ram:BuyerOrderReferencedDocument>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>288.79</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">1</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>7</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:BillingSpecifiedPeriod>
+                    <ram:StartDateTime>
+                        <udt:DateTimeString format="102">20160101</udt:DateTimeString>
+                    </ram:StartDateTime>
+                    <ram:EndDateTime>
+                        <udt:DateTimeString format="102">20161231</udt:DateTimeString>
+                    </ram:EndDateTime>
+                </ram:BillingSpecifiedPeriod>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>288.79</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>Porto + Versandkosten</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:Name>Porto + Versandkosten</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>26.07</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">1</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>7</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>26.07</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:ApplicableHeaderTradeAgreement>
+            <ram:BuyerReference>04011000-12345-03</ram:BuyerReference>
+            <ram:SellerTradeParty>
+                <ram:Name>[Seller name]</ram:Name>
+                <ram:Description>123/456/7890, HRA-Eintrag in […]</ram:Description>
+                <ram:SpecifiedLegalOrganization>
+                    <ram:ID>[HRA-Eintrag]</ram:ID>
+                    <ram:TradingBusinessName>[Seller trading name]</ram:TradingBusinessName>
+                </ram:SpecifiedLegalOrganization>
+                <ram:DefinedTradeContact>
+                    <ram:PersonName>nicht vorhanden</ram:PersonName>
+                    <ram:TelephoneUniversalCommunication>
+                        <ram:CompleteNumber>+49 1234-5678</ram:CompleteNumber>
+                    </ram:TelephoneUniversalCommunication>
+                    <ram:EmailURIUniversalCommunication>
+                        <ram:URIID>seller@email.de</ram:URIID>
+                    </ram:EmailURIUniversalCommunication>
+                </ram:DefinedTradeContact>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:LineOne>[Seller address line 1]</ram:LineOne>
+                    <ram:CityName>[Seller city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">seller@email.de</ram:URIID>
+                </ram:URIUniversalCommunication>
+                <ram:SpecifiedTaxRegistration>
+                    <ram:ID schemeID="VA">DE 123456789</ram:ID>
+                </ram:SpecifiedTaxRegistration>
+            </ram:SellerTradeParty>
+            <ram:BuyerTradeParty>
+                <ram:ID>[Buyer identifier]</ram:ID>
+                <ram:Name>[Buyer name]</ram:Name>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:LineOne>[Buyer address line 1]</ram:LineOne>
+                    <ram:CityName>[Buyer city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">buyer@info.de</ram:URIID>
+                </ram:URIUniversalCommunication>
+            </ram:BuyerTradeParty>
+        </ram:ApplicableHeaderTradeAgreement>
+        <ram:ApplicableHeaderTradeDelivery/>
+        <ram:ApplicableHeaderTradeSettlement>
+            <ram:InvoiceCurrencyCode>EUR</ram:InvoiceCurrencyCode>
+            <ram:SpecifiedTradeSettlementPaymentMeans>
+                <ram:TypeCode>58</ram:TypeCode>
+                <ram:PayeePartyCreditorFinancialAccount>
+                    <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+                    <ram:IBANID>DE75512108001245126199</ram:IBANID>
+                </ram:PayeePartyCreditorFinancialAccount>
+            </ram:SpecifiedTradeSettlementPaymentMeans>
+            <ram:ApplicableTradeTax>
+                <ram:CalculatedAmount>22.04</ram:CalculatedAmount>
+                <ram:TypeCode>VAT</ram:TypeCode>
+                <ram:BasisAmount>314.86</ram:BasisAmount>
+                <ram:CategoryCode>S</ram:CategoryCode>
+                <ram:RateApplicablePercent>7</ram:RateApplicablePercent>
+            </ram:ApplicableTradeTax>
+            <ram:SpecifiedTradePaymentTerms>
+                <ram:Description>Zahlbar sofort ohne Abzug.</ram:Description>
+            </ram:SpecifiedTradePaymentTerms>
+            <ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+                <ram:LineTotalAmount>314.86</ram:LineTotalAmount>
+                <ram:TaxBasisTotalAmount>314.86</ram:TaxBasisTotalAmount>
+                <ram:TaxTotalAmount currencyID="EUR">22.04</ram:TaxTotalAmount>
+                <ram:RoundingAmount>0.01</ram:RoundingAmount>
+                <ram:GrandTotalAmount>336.9</ram:GrandTotalAmount>
+                <ram:DuePayableAmount>336.91</ram:DuePayableAmount>
+            </ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+        </ram:ApplicableHeaderTradeSettlement>
+    </rsm:SupplyChainTradeTransaction>
+</rsm:CrossIndustryInvoice>
--- a/tests/inputs/cii/01.18a-INVOICE_uncefact.xml
+++ b/tests/inputs/cii/01.18a-INVOICE_uncefact.xml
@@ -0,0 +1,233 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<rsm:CrossIndustryInvoice xmlns:rsm="urn:un:unece:uncefact:data:standard:CrossIndustryInvoice:100"
+                          xmlns:ram="urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100"
+                          xmlns:qdt="urn:un:unece:uncefact:data:standard:QualifiedDataType:100"
+                          xmlns:udt="urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100">
+    <rsm:ExchangedDocumentContext>
+        <ram:BusinessProcessSpecifiedDocumentContextParameter>
+            <ram:ID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</ram:ID>
+        </ram:BusinessProcessSpecifiedDocumentContextParameter>
+        <ram:GuidelineSpecifiedDocumentContextParameter>
+            <ram:ID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</ram:ID>
+        </ram:GuidelineSpecifiedDocumentContextParameter>
+    </rsm:ExchangedDocumentContext>
+    <rsm:ExchangedDocument>
+        <ram:ID>PRG1502112</ram:ID>
+        <ram:TypeCode>384</ram:TypeCode>
+        <ram:IssueDateTime>
+            <udt:DateTimeString format="102">20150424</udt:DateTimeString>
+        </ram:IssueDateTime>
+        <ram:IncludedNote>
+            <ram:Content>Trainer: Herr […]</ram:Content>
+            <ram:SubjectCode>ADU</ram:SubjectCode>
+        </ram:IncludedNote>
+    </rsm:ExchangedDocument>
+    <rsm:SupplyChainTradeTransaction>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>Seminar: […]</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:Name>Seminar</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>1340</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="DAY">5</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>6700</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>Raumkosten Schulungsort</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:Name>Raumkosten</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>300</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="DAY">5</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>1500</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>Reisekostenpauschale</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:Name>Reisekostenpauschale</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>90</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">5</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>450</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>Seminarunterlagen</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:Name>Seminarunterlagen</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>20</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">11</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>220</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:ApplicableHeaderTradeAgreement>
+            <ram:BuyerReference>99000000-18188-18</ram:BuyerReference>
+            <ram:SellerTradeParty>
+                <ram:Name>[Seller name]</ram:Name>
+                <ram:Description>Sitz der Gesellschaft […], Registergericht […], Amtsgericht […]</ram:Description>
+                <ram:SpecifiedLegalOrganization>
+                    <ram:ID>HRB 123456</ram:ID>
+                </ram:SpecifiedLegalOrganization>
+                <ram:DefinedTradeContact>
+                    <ram:PersonName>[Seller contact person]</ram:PersonName>
+                    <ram:TelephoneUniversalCommunication>
+                        <ram:CompleteNumber>+49 123456789</ram:CompleteNumber>
+                    </ram:TelephoneUniversalCommunication>
+                    <ram:EmailURIUniversalCommunication>
+                        <ram:URIID>xxx@schulung.de</ram:URIID>
+                    </ram:EmailURIUniversalCommunication>
+                </ram:DefinedTradeContact>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:LineOne>[Seller address line 1]</ram:LineOne>
+                    <ram:CityName>[Seller city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">seller@email.de</ram:URIID>
+                </ram:URIUniversalCommunication>
+                <ram:SpecifiedTaxRegistration>
+                    <ram:ID schemeID="VA">DE123456789</ram:ID>
+                </ram:SpecifiedTaxRegistration>
+            </ram:SellerTradeParty>
+            <ram:BuyerTradeParty>
+                <ram:ID>BI123456</ram:ID>
+                <ram:Name>[Buyer name]</ram:Name>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:LineOne>[Buyer address line 1]</ram:LineOne>
+                    <ram:CityName>[Buyer city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">buyer@info.de</ram:URIID>
+                </ram:URIUniversalCommunication>
+            </ram:BuyerTradeParty>
+            <ram:SpecifiedProcuringProject>
+                <ram:ID>PR456789</ram:ID>
+                <ram:Name>Project reference</ram:Name>
+            </ram:SpecifiedProcuringProject>
+        </ram:ApplicableHeaderTradeAgreement>
+        <ram:ApplicableHeaderTradeDelivery>
+            <ram:ShipToTradeParty>
+                <ram:Name>Schulungsanbieter</ram:Name>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:CityName>Schulungsort</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+            </ram:ShipToTradeParty>
+        </ram:ApplicableHeaderTradeDelivery>
+        <ram:ApplicableHeaderTradeSettlement>
+            <ram:InvoiceCurrencyCode>EUR</ram:InvoiceCurrencyCode>
+            <ram:SpecifiedTradeSettlementPaymentMeans>
+                <ram:TypeCode>58</ram:TypeCode>
+                <ram:PayeePartyCreditorFinancialAccount>
+                    <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+                    <ram:IBANID>DE75512108001245126199</ram:IBANID>
+                </ram:PayeePartyCreditorFinancialAccount>
+            </ram:SpecifiedTradeSettlementPaymentMeans>
+            <ram:SpecifiedTradeSettlementPaymentMeans>
+                <ram:TypeCode>58</ram:TypeCode>
+                <ram:PayeePartyCreditorFinancialAccount>
+                    <ram:IBANID>DE12500105170648489890</ram:IBANID>
+                </ram:PayeePartyCreditorFinancialAccount>
+            </ram:SpecifiedTradeSettlementPaymentMeans>
+            <ram:ApplicableTradeTax>
+                <ram:CalculatedAmount>1685.3</ram:CalculatedAmount>
+                <ram:TypeCode>VAT</ram:TypeCode>
+                <ram:BasisAmount>8870</ram:BasisAmount>
+                <ram:CategoryCode>S</ram:CategoryCode>
+                <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+            </ram:ApplicableTradeTax>
+            <ram:BillingSpecifiedPeriod>
+                <ram:StartDateTime>
+                    <udt:DateTimeString format="102">20150420</udt:DateTimeString>
+                </ram:StartDateTime>
+                <ram:EndDateTime>
+                    <udt:DateTimeString format="102">20150424</udt:DateTimeString>
+                </ram:EndDateTime>
+            </ram:BillingSpecifiedPeriod>
+            <ram:SpecifiedTradePaymentTerms>
+                <ram:Description>14 Tage</ram:Description>
+            </ram:SpecifiedTradePaymentTerms>
+            <ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+                <ram:LineTotalAmount>8870</ram:LineTotalAmount>
+                <ram:TaxBasisTotalAmount>8870</ram:TaxBasisTotalAmount>
+                <ram:TaxTotalAmount currencyID="EUR">1685.3</ram:TaxTotalAmount>
+                <ram:GrandTotalAmount>10555.3</ram:GrandTotalAmount>
+                <ram:DuePayableAmount>10555.3</ram:DuePayableAmount>
+            </ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+            <ram:InvoiceReferencedDocument>
+                <ram:IssuerAssignedID>PRG1502168</ram:IssuerAssignedID>
+            </ram:InvoiceReferencedDocument>
+        </ram:ApplicableHeaderTradeSettlement>
+    </rsm:SupplyChainTradeTransaction>
+</rsm:CrossIndustryInvoice>
--- a/tests/inputs/cii/01.19a-INVOICE_uncefact.xml
+++ b/tests/inputs/cii/01.19a-INVOICE_uncefact.xml
@@ -0,0 +1,220 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<rsm:CrossIndustryInvoice xmlns:rsm="urn:un:unece:uncefact:data:standard:CrossIndustryInvoice:100"
+                          xmlns:ram="urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100"
+                          xmlns:qdt="urn:un:unece:uncefact:data:standard:QualifiedDataType:100"
+                          xmlns:udt="urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100">
+    <rsm:ExchangedDocumentContext>
+        <ram:BusinessProcessSpecifiedDocumentContextParameter>
+            <ram:ID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</ram:ID>
+        </ram:BusinessProcessSpecifiedDocumentContextParameter>
+        <ram:GuidelineSpecifiedDocumentContextParameter>
+            <ram:ID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</ram:ID>
+        </ram:GuidelineSpecifiedDocumentContextParameter>
+    </rsm:ExchangedDocumentContext>
+    <rsm:ExchangedDocument>
+        <ram:ID>PRG1502112</ram:ID>
+        <ram:TypeCode>380</ram:TypeCode>
+        <ram:IssueDateTime>
+            <udt:DateTimeString format="102">20150424</udt:DateTimeString>
+        </ram:IssueDateTime>
+        <ram:IncludedNote>
+            <ram:Content>Trainer: Herr […]</ram:Content>
+            <ram:SubjectCode>ADU</ram:SubjectCode>
+        </ram:IncludedNote>
+    </rsm:ExchangedDocument>
+    <rsm:SupplyChainTradeTransaction>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>Seminar: […]</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:Name>Seminar</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>1340</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="DAY">5</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>6700</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>Raumkosten Schulungsort</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:Name>Raumkosten</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>300</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="DAY">5</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>1500</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>Reisekostenpauschale</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:Name>Reisekostenpauschale</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>90</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">5</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>450</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>Seminarunterlagen</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:Name>Seminarunterlagen</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>20</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">11</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>220</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:ApplicableHeaderTradeAgreement>
+            <ram:BuyerReference>99000000-18188-18</ram:BuyerReference>
+            <ram:SellerTradeParty>
+                <ram:Name>[Seller name]</ram:Name>
+                <ram:Description>Sitz der Gesellschaft […], Registergericht […], Amtsgericht […]</ram:Description>
+                <ram:SpecifiedLegalOrganization>
+                    <ram:ID>HRB 123456</ram:ID>
+                </ram:SpecifiedLegalOrganization>
+                <ram:DefinedTradeContact>
+                    <ram:PersonName>[Seller contact person]</ram:PersonName>
+                    <ram:TelephoneUniversalCommunication>
+                        <ram:CompleteNumber>+49 123456789</ram:CompleteNumber>
+                    </ram:TelephoneUniversalCommunication>
+                    <ram:EmailURIUniversalCommunication>
+                        <ram:URIID>xxx@schulung.de</ram:URIID>
+                    </ram:EmailURIUniversalCommunication>
+                </ram:DefinedTradeContact>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:LineOne>[Seller address line 1]</ram:LineOne>
+                    <ram:CityName>[Seller city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">seller@email.de</ram:URIID>
+                </ram:URIUniversalCommunication>
+                <ram:SpecifiedTaxRegistration>
+                    <ram:ID schemeID="VA">DE123456789</ram:ID>
+                </ram:SpecifiedTaxRegistration>
+            </ram:SellerTradeParty>
+            <ram:BuyerTradeParty>
+                <ram:ID>BI123456</ram:ID>
+                <ram:Name>[Buyer name]</ram:Name>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:LineOne>[Buyer address line 1]</ram:LineOne>
+                    <ram:CityName>[Buyer city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">buyer@info.de</ram:URIID>
+                </ram:URIUniversalCommunication>
+            </ram:BuyerTradeParty>
+            <ram:SpecifiedProcuringProject>
+                <ram:ID>PR456789</ram:ID>
+                <ram:Name>Project reference</ram:Name>
+            </ram:SpecifiedProcuringProject>
+        </ram:ApplicableHeaderTradeAgreement>
+        <ram:ApplicableHeaderTradeDelivery>
+            <ram:ShipToTradeParty>
+                <ram:Name>Schulungsanbieter</ram:Name>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:CityName>Schulungsort</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+            </ram:ShipToTradeParty>
+        </ram:ApplicableHeaderTradeDelivery>
+        <ram:ApplicableHeaderTradeSettlement>
+            <ram:InvoiceCurrencyCode>EUR</ram:InvoiceCurrencyCode>
+            <ram:SpecifiedTradeSettlementPaymentMeans>
+                <ram:TypeCode>68</ram:TypeCode>
+            </ram:SpecifiedTradeSettlementPaymentMeans>
+            <ram:ApplicableTradeTax>
+                <ram:CalculatedAmount>1685.3</ram:CalculatedAmount>
+                <ram:TypeCode>VAT</ram:TypeCode>
+                <ram:BasisAmount>8870</ram:BasisAmount>
+                <ram:CategoryCode>S</ram:CategoryCode>
+                <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+            </ram:ApplicableTradeTax>
+            <ram:BillingSpecifiedPeriod>
+                <ram:StartDateTime>
+                    <udt:DateTimeString format="102">20150420</udt:DateTimeString>
+                </ram:StartDateTime>
+                <ram:EndDateTime>
+                    <udt:DateTimeString format="102">20150424</udt:DateTimeString>
+                </ram:EndDateTime>
+            </ram:BillingSpecifiedPeriod>
+            <ram:SpecifiedTradePaymentTerms>
+                <ram:Description>14 Tage; bitte die Zahlung per PayPal über die angegebene Email-Adresse durchführen</ram:Description>
+            </ram:SpecifiedTradePaymentTerms>
+            <ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+                <ram:LineTotalAmount>8870</ram:LineTotalAmount>
+                <ram:TaxBasisTotalAmount>8870</ram:TaxBasisTotalAmount>
+                <ram:TaxTotalAmount currencyID="EUR">1685.3</ram:TaxTotalAmount>
+                <ram:GrandTotalAmount>10555.3</ram:GrandTotalAmount>
+                <ram:DuePayableAmount>10555.3</ram:DuePayableAmount>
+            </ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+        </ram:ApplicableHeaderTradeSettlement>
+    </rsm:SupplyChainTradeTransaction>
+</rsm:CrossIndustryInvoice>
--- a/tests/inputs/cii/01.20a-INVOICE_uncefact.xml
+++ b/tests/inputs/cii/01.20a-INVOICE_uncefact.xml
@@ -0,0 +1,215 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<rsm:CrossIndustryInvoice xmlns:rsm="urn:un:unece:uncefact:data:standard:CrossIndustryInvoice:100" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ram="urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100" xmlns:udt="urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100" xmlns:qdt="urn:un:unece:uncefact:data:standard:QualifiedDataType:100">  
+  <rsm:ExchangedDocumentContext> 
+    <ram:BusinessProcessSpecifiedDocumentContextParameter>
+      <ram:ID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</ram:ID>
+    </ram:BusinessProcessSpecifiedDocumentContextParameter>
+    <ram:GuidelineSpecifiedDocumentContextParameter> 
+      <ram:ID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</ram:ID>
+    </ram:GuidelineSpecifiedDocumentContextParameter> 
+  </rsm:ExchangedDocumentContext>  
+  <rsm:ExchangedDocument> 
+    <ram:ID>1234567890</ram:ID>  
+    <ram:TypeCode>389</ram:TypeCode>  
+    <ram:IssueDateTime>
+      <udt:DateTimeString format="102">20210125</udt:DateTimeString>
+    </ram:IssueDateTime>  
+    <ram:IncludedNote> 
+      <ram:Content>Betriebsstätte</ram:Content>  
+      <ram:SubjectCode>REG</ram:SubjectCode> 
+    </ram:IncludedNote> 
+  </rsm:ExchangedDocument>  
+  <rsm:SupplyChainTradeTransaction> 
+    <ram:IncludedSupplyChainTradeLineItem> 
+      <ram:AssociatedDocumentLineDocument> 
+        <ram:LineID>1</ram:LineID> 
+      </ram:AssociatedDocumentLineDocument>  
+      <ram:SpecifiedTradeProduct> 
+        <ram:Name>Behältermiete</ram:Name>
+      </ram:SpecifiedTradeProduct>  
+      <ram:SpecifiedLineTradeAgreement> 
+        <ram:GrossPriceProductTradePrice> 
+          <ram:ChargeAmount>110.0000</ram:ChargeAmount>
+          <ram:BasisQuantity unitCode="C62">1.0000</ram:BasisQuantity>
+          <ram:AppliedTradeAllowanceCharge>
+            <ram:ChargeIndicator>
+              <udt:Indicator>false</udt:Indicator>
+            </ram:ChargeIndicator>
+            <ram:ActualAmount>10.000000000000000000</ram:ActualAmount>
+          </ram:AppliedTradeAllowanceCharge>
+        </ram:GrossPriceProductTradePrice>  
+        <ram:NetPriceProductTradePrice> 
+          <ram:ChargeAmount>100.0000</ram:ChargeAmount>  
+          <ram:BasisQuantity unitCode="C62">1.0000</ram:BasisQuantity> 
+        </ram:NetPriceProductTradePrice> 
+      </ram:SpecifiedLineTradeAgreement>  
+      <ram:SpecifiedLineTradeDelivery> 
+        <ram:BilledQuantity unitCode="C62">-1.0000</ram:BilledQuantity> 
+      </ram:SpecifiedLineTradeDelivery>  
+      <ram:SpecifiedLineTradeSettlement> 
+        <ram:ApplicableTradeTax> 
+          <ram:TypeCode>VAT</ram:TypeCode>  
+          <ram:CategoryCode>S</ram:CategoryCode>  
+          <ram:RateApplicablePercent>19.00</ram:RateApplicablePercent> 
+        </ram:ApplicableTradeTax>  
+        <ram:BillingSpecifiedPeriod>
+          <ram:StartDateTime>
+            <udt:DateTimeString format="102">20210125</udt:DateTimeString>
+          </ram:StartDateTime>
+          <ram:EndDateTime>
+            <udt:DateTimeString format="102">20210125</udt:DateTimeString>
+          </ram:EndDateTime>
+        </ram:BillingSpecifiedPeriod>  
+        <ram:SpecifiedTradeSettlementLineMonetarySummation> 
+          <ram:LineTotalAmount>-100.00</ram:LineTotalAmount> 
+        </ram:SpecifiedTradeSettlementLineMonetarySummation> 
+      </ram:SpecifiedLineTradeSettlement> 
+    </ram:IncludedSupplyChainTradeLineItem>  
+    <ram:IncludedSupplyChainTradeLineItem> 
+      <ram:AssociatedDocumentLineDocument> 
+        <ram:LineID>2</ram:LineID> 
+      </ram:AssociatedDocumentLineDocument>  
+      <ram:SpecifiedTradeProduct> 
+        <ram:Name>Entsorgung</ram:Name>  
+        <ram:Description>Ersatztext bei Entsorgung</ram:Description> 
+      </ram:SpecifiedTradeProduct>  
+      <ram:SpecifiedLineTradeAgreement> 
+        <ram:GrossPriceProductTradePrice> 
+          <ram:ChargeAmount>110.0000</ram:ChargeAmount>
+          <ram:BasisQuantity unitCode="TNE">1.0000</ram:BasisQuantity>
+          <ram:AppliedTradeAllowanceCharge>
+            <ram:ChargeIndicator>
+              <udt:Indicator>false</udt:Indicator>
+            </ram:ChargeIndicator>
+            <ram:ActualAmount>10.0000</ram:ActualAmount>
+          </ram:AppliedTradeAllowanceCharge>
+        </ram:GrossPriceProductTradePrice>  
+        <ram:NetPriceProductTradePrice> 
+          <ram:ChargeAmount>100.0000</ram:ChargeAmount>  
+          <ram:BasisQuantity unitCode="TNE">1.0000</ram:BasisQuantity> 
+        </ram:NetPriceProductTradePrice> 
+      </ram:SpecifiedLineTradeAgreement>  
+      <ram:SpecifiedLineTradeDelivery> 
+        <ram:BilledQuantity unitCode="TNE">4.0000</ram:BilledQuantity> 
+      </ram:SpecifiedLineTradeDelivery>  
+      <ram:SpecifiedLineTradeSettlement> 
+        <ram:ApplicableTradeTax> 
+          <ram:TypeCode>VAT</ram:TypeCode>  
+          <ram:CategoryCode>S</ram:CategoryCode>  
+          <ram:RateApplicablePercent>19.00</ram:RateApplicablePercent> 
+        </ram:ApplicableTradeTax>  
+        <ram:BillingSpecifiedPeriod>
+          <ram:StartDateTime>
+            <udt:DateTimeString format="102">20210125</udt:DateTimeString>
+          </ram:StartDateTime>
+          <ram:EndDateTime>
+            <udt:DateTimeString format="102">20210125</udt:DateTimeString>
+          </ram:EndDateTime>
+        </ram:BillingSpecifiedPeriod>  
+        <ram:SpecifiedTradeSettlementLineMonetarySummation> 
+          <ram:LineTotalAmount>400.00</ram:LineTotalAmount> 
+        </ram:SpecifiedTradeSettlementLineMonetarySummation> 
+      </ram:SpecifiedLineTradeSettlement> 
+    </ram:IncludedSupplyChainTradeLineItem>  
+    <ram:ApplicableHeaderTradeAgreement> 
+      <ram:BuyerReference>1234567890-54321-40</ram:BuyerReference>  
+      <ram:SellerTradeParty> 
+        <ram:Name>Betriebsstätte</ram:Name>  
+        <ram:DefinedTradeContact> 
+          <ram:PersonName>Reimund Kann</ram:PersonName>  
+          <ram:TelephoneUniversalCommunication> 
+            <ram:CompleteNumber>0123456789</ram:CompleteNumber> 
+          </ram:TelephoneUniversalCommunication>  
+          <ram:EmailURIUniversalCommunication> 
+            <ram:URIID>test@test.de</ram:URIID> 
+          </ram:EmailURIUniversalCommunication> 
+        </ram:DefinedTradeContact>  
+        <ram:PostalTradeAddress> 
+          <ram:PostcodeCode>12345</ram:PostcodeCode>  
+          <ram:LineOne>[Street]</ram:LineOne>  
+          <ram:CityName>[City]</ram:CityName>  
+          <ram:CountryID>DE</ram:CountryID> 
+        </ram:PostalTradeAddress>  
+        <ram:URIUniversalCommunication>
+          <ram:URIID schemeID="EM">seller@email.de</ram:URIID>
+        </ram:URIUniversalCommunication>
+        <ram:SpecifiedTaxRegistration> 
+          <ram:ID schemeID="VA">DE123456789</ram:ID> 
+        </ram:SpecifiedTaxRegistration> 
+      </ram:SellerTradeParty>  
+      <ram:BuyerTradeParty> 
+        <ram:Name>Kunde 1</ram:Name>  
+        <ram:PostalTradeAddress> 
+          <ram:PostcodeCode>12345</ram:PostcodeCode>  
+          <ram:LineOne>[Street]</ram:LineOne>  
+          <ram:CityName>[City]</ram:CityName>  
+          <ram:CountryID>DE</ram:CountryID> 
+        </ram:PostalTradeAddress>  
+        <ram:URIUniversalCommunication>
+          <ram:URIID schemeID="EM">buyer@info.de</ram:URIID>
+        </ram:URIUniversalCommunication>
+        <ram:SpecifiedTaxRegistration> 
+          <ram:ID schemeID="VA">DE987654321</ram:ID> 
+        </ram:SpecifiedTaxRegistration> 
+      </ram:BuyerTradeParty>  
+      <ram:BuyerOrderReferencedDocument> 
+        <ram:IssuerAssignedID>Bestellung XRechnung</ram:IssuerAssignedID> 
+      </ram:BuyerOrderReferencedDocument> 
+    </ram:ApplicableHeaderTradeAgreement>  
+    <ram:ApplicableHeaderTradeDelivery> 
+      <ram:ShipToTradeParty> 
+        <ram:Name>[ShipToTradeParty]</ram:Name>  
+        <ram:PostalTradeAddress> 
+          <ram:PostcodeCode>54321</ram:PostcodeCode>  
+          <ram:LineOne>[Street]</ram:LineOne>  
+          <ram:CityName>[City]</ram:CityName>  
+          <ram:CountryID>DE</ram:CountryID> 
+        </ram:PostalTradeAddress> 
+      </ram:ShipToTradeParty>  
+      <ram:ActualDeliverySupplyChainEvent> 
+        <ram:OccurrenceDateTime>
+          <udt:DateTimeString format="102">20210125</udt:DateTimeString>
+        </ram:OccurrenceDateTime> 
+      </ram:ActualDeliverySupplyChainEvent> 
+    </ram:ApplicableHeaderTradeDelivery>  
+    <ram:ApplicableHeaderTradeSettlement> 
+      <ram:PaymentReference>1234567890</ram:PaymentReference>  
+      <ram:InvoiceCurrencyCode>EUR</ram:InvoiceCurrencyCode>  
+      <ram:SpecifiedTradeSettlementPaymentMeans> 
+        <ram:TypeCode>42</ram:TypeCode>  
+        <ram:Information>Bank transfer</ram:Information>  
+        <ram:PayeePartyCreditorFinancialAccount> 
+          <ram:IBANID>1234 5678 9012 3456 789022</ram:IBANID>  
+          <ram:AccountName>Postbank Düsseldorf</ram:AccountName> 
+        </ram:PayeePartyCreditorFinancialAccount>  
+        <ram:PayeeSpecifiedCreditorFinancialInstitution> 
+          <ram:BICID>PBNKDEFF</ram:BICID> 
+        </ram:PayeeSpecifiedCreditorFinancialInstitution> 
+      </ram:SpecifiedTradeSettlementPaymentMeans>  
+      <ram:ApplicableTradeTax> 
+        <ram:CalculatedAmount>57.00</ram:CalculatedAmount>  
+        <ram:TypeCode>VAT</ram:TypeCode>  
+        <ram:BasisAmount>300.00</ram:BasisAmount>  
+        <ram:CategoryCode>S</ram:CategoryCode>  
+        <ram:RateApplicablePercent>19.00</ram:RateApplicablePercent> 
+      </ram:ApplicableTradeTax>  
+      <ram:SpecifiedTradePaymentTerms> 
+        <ram:Description>Zahlbar unter Angabe der Rechungs- und Debitornummer sofort netto Kasse; fällig zum 04.02.2021 ohne Abzug</ram:Description>  
+        <ram:DueDateDateTime>
+          <udt:DateTimeString format="102">20210204</udt:DateTimeString>
+        </ram:DueDateDateTime> 
+      </ram:SpecifiedTradePaymentTerms>  
+      <ram:SpecifiedTradeSettlementHeaderMonetarySummation> 
+        <ram:LineTotalAmount>300.00</ram:LineTotalAmount>  
+        <ram:ChargeTotalAmount>0.00</ram:ChargeTotalAmount>
+        <ram:AllowanceTotalAmount>0.00</ram:AllowanceTotalAmount>  
+        <ram:TaxBasisTotalAmount>300.00</ram:TaxBasisTotalAmount>  
+        <ram:TaxTotalAmount currencyID="EUR">57.00</ram:TaxTotalAmount>  
+        <ram:GrandTotalAmount>357.00</ram:GrandTotalAmount>  
+        <ram:TotalPrepaidAmount>0.00</ram:TotalPrepaidAmount>  
+        <ram:DuePayableAmount>357.00</ram:DuePayableAmount> 
+      </ram:SpecifiedTradeSettlementHeaderMonetarySummation> 
+    </ram:ApplicableHeaderTradeSettlement> 
+  </rsm:SupplyChainTradeTransaction> 
+</rsm:CrossIndustryInvoice>
--- a/tests/inputs/cii/01.21a-INVOICE_uncefact.xml
+++ b/tests/inputs/cii/01.21a-INVOICE_uncefact.xml
@@ -0,0 +1,166 @@
+<?xml version="1.0" encoding="utf-8"?>
+<rsm:CrossIndustryInvoice xmlns:a="urn:un:unece:uncefact:data:standard:QualifiedDataType:100" xmlns:rsm="urn:un:unece:uncefact:data:standard:CrossIndustryInvoice:100" xmlns:qdt="urn:un:unece:uncefact:data:standard:QualifiedDataType:100" xmlns:ram="urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:udt="urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100">
+    <rsm:ExchangedDocumentContext>
+        <ram:BusinessProcessSpecifiedDocumentContextParameter>
+            <ram:ID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</ram:ID>
+        </ram:BusinessProcessSpecifiedDocumentContextParameter>
+        <ram:GuidelineSpecifiedDocumentContextParameter>
+            <ram:ID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</ram:ID>
+        </ram:GuidelineSpecifiedDocumentContextParameter>
+    </rsm:ExchangedDocumentContext>
+    <rsm:ExchangedDocument>
+        <ram:ID>18383</ram:ID>
+        <ram:TypeCode>380</ram:TypeCode>
+        <ram:IssueDateTime>
+            <udt:DateTimeString format="102">20201127</udt:DateTimeString>
+        </ram:IssueDateTime>
+    </rsm:ExchangedDocument>
+    <rsm:SupplyChainTradeTransaction>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>1</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:SellerAssignedID>1</ram:SellerAssignedID>
+                <ram:Name>Tür Instandsetzung</ram:Name>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:GrossPriceProductTradePrice>
+                    <ram:ChargeAmount>62.00</ram:ChargeAmount>
+                    <ram:AppliedTradeAllowanceCharge>
+                        <ram:ChargeIndicator>
+                            <udt:Indicator>false</udt:Indicator>
+                        </ram:ChargeIndicator>
+                        <ram:ActualAmount>10.00</ram:ActualAmount>
+                    </ram:AppliedTradeAllowanceCharge>
+                </ram:GrossPriceProductTradePrice>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>52.00</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="HUR">4.00</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:ExemptionReason>Umkehrung der Steuerschuldnerschaft</ram:ExemptionReason>
+                    <ram:CategoryCode>AE</ram:CategoryCode>
+                    <ram:RateApplicablePercent>0.00</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>208.00</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:ApplicableHeaderTradeAgreement>
+            <ram:BuyerReference>04011000-12349-88</ram:BuyerReference>
+            <ram:SellerTradeParty>
+                <ram:ID>116078</ram:ID>
+                <ram:Name>Mustermann GmbH</ram:Name>
+                <ram:DefinedTradeContact>
+                    <ram:PersonName>Wolfgang Muster</ram:PersonName>
+                    <ram:TelephoneUniversalCommunication>
+                        <ram:CompleteNumber>069-12335</ram:CompleteNumber>
+                    </ram:TelephoneUniversalCommunication>
+                    <ram:EmailURIUniversalCommunication>
+                        <ram:URIID>mail@muster.de</ram:URIID>
+                    </ram:EmailURIUniversalCommunication>
+                </ram:DefinedTradeContact>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>60388</ram:PostcodeCode>
+                    <ram:LineOne>Musterstrasse 4</ram:LineOne>
+                    <ram:CityName>Frankfurt am Main</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">seller@email.de</ram:URIID>
+                </ram:URIUniversalCommunication>
+                <ram:SpecifiedTaxRegistration>
+                    <ram:ID schemeID="FC">04523149435</ram:ID>
+                </ram:SpecifiedTaxRegistration>
+                <ram:SpecifiedTaxRegistration>
+                    <ram:ID schemeID="VA">DE152338654</ram:ID>
+                </ram:SpecifiedTaxRegistration>
+            </ram:SellerTradeParty>
+            <ram:BuyerTradeParty>
+                <ram:ID>10099</ram:ID>
+                <ram:Name>DB Station&amp;Service AG RB Mitte</ram:Name>
+                <ram:DefinedTradeContact>
+                    <ram:PersonName>Klaus Koffer</ram:PersonName>
+                </ram:DefinedTradeContact>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>10115</ram:PostcodeCode>
+                    <ram:LineOne>Musterweg 1</ram:LineOne>
+                    <ram:CityName>Berlin</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">buyer@info.de</ram:URIID>
+                </ram:URIUniversalCommunication>
+                <ram:SpecifiedTaxRegistration>
+                    <ram:ID schemeID="VA">DE152138634</ram:ID>
+                </ram:SpecifiedTaxRegistration>
+                <ram:SpecifiedTaxRegistration>
+                    <ram:ID schemeID="FC">04523249415</ram:ID>
+                </ram:SpecifiedTaxRegistration>
+            </ram:BuyerTradeParty>
+        </ram:ApplicableHeaderTradeAgreement>
+        <ram:ApplicableHeaderTradeDelivery>
+            <ram:ActualDeliverySupplyChainEvent>
+                <ram:OccurrenceDateTime>
+                    <udt:DateTimeString format="102">20201123</udt:DateTimeString>
+                </ram:OccurrenceDateTime>
+            </ram:ActualDeliverySupplyChainEvent>
+        </ram:ApplicableHeaderTradeDelivery>
+        <ram:ApplicableHeaderTradeSettlement>
+            <ram:InvoiceCurrencyCode>EUR</ram:InvoiceCurrencyCode>
+            <ram:SpecifiedTradeSettlementPaymentMeans>
+                <ram:TypeCode>1</ram:TypeCode>
+                <ram:Information>Rechnung</ram:Information>
+                <ram:PayeePartyCreditorFinancialAccount>
+                    <ram:IBANID>DE54500800000192632400</ram:IBANID>
+                    <ram:AccountName>Mustermann GmbH</ram:AccountName>
+                </ram:PayeePartyCreditorFinancialAccount>
+                <ram:PayeeSpecifiedCreditorFinancialInstitution>
+                    <ram:BICID>DRESDEFFXXX</ram:BICID>
+                </ram:PayeeSpecifiedCreditorFinancialInstitution>
+            </ram:SpecifiedTradeSettlementPaymentMeans>
+            <ram:ApplicableTradeTax>
+                <ram:CalculatedAmount>0.00</ram:CalculatedAmount>
+                <ram:TypeCode>VAT</ram:TypeCode>
+                <ram:ExemptionReason>als gemeinnützig anerkannt</ram:ExemptionReason>
+                <ram:BasisAmount>233.00</ram:BasisAmount>
+                <ram:CategoryCode>AE</ram:CategoryCode>
+                <ram:RateApplicablePercent>0.00</ram:RateApplicablePercent>
+            </ram:ApplicableTradeTax>
+            <ram:SpecifiedTradeAllowanceCharge>
+                <ram:ChargeIndicator>
+                    <udt:Indicator>true</udt:Indicator>
+                </ram:ChargeIndicator>
+                <ram:ActualAmount>25.00</ram:ActualAmount>
+                <ram:Reason>Lieferpauschale</ram:Reason>
+                <ram:CategoryTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>AE</ram:CategoryCode>
+                    <ram:RateApplicablePercent>0.00</ram:RateApplicablePercent>
+                </ram:CategoryTradeTax>
+            </ram:SpecifiedTradeAllowanceCharge>
+            <ram:SpecifiedTradePaymentTerms>
+                <ram:Description>10 Tage 3% Skonto, 30 Tage netto</ram:Description>
+                <ram:DueDateDateTime>
+                    <udt:DateTimeString format="102">20201227</udt:DateTimeString>
+                </ram:DueDateDateTime>
+            </ram:SpecifiedTradePaymentTerms>
+            <ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+                <ram:LineTotalAmount>208.00</ram:LineTotalAmount>
+                <ram:ChargeTotalAmount>25.00</ram:ChargeTotalAmount>
+                <ram:AllowanceTotalAmount>0.00</ram:AllowanceTotalAmount>
+                <ram:TaxBasisTotalAmount>233.00</ram:TaxBasisTotalAmount>
+                <ram:TaxTotalAmount currencyID="EUR">0.00</ram:TaxTotalAmount>
+                <ram:GrandTotalAmount>233.00</ram:GrandTotalAmount>
+                <ram:DuePayableAmount>233.00</ram:DuePayableAmount>
+            </ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+        </ram:ApplicableHeaderTradeSettlement>
+    </rsm:SupplyChainTradeTransaction>
+</rsm:CrossIndustryInvoice>
--- a/tests/inputs/cii/02.01a-INVOICE_uncefact.xml
+++ b/tests/inputs/cii/02.01a-INVOICE_uncefact.xml
--- a/tests/inputs/cii/02.02a-INVOICE_uncefact.xml
+++ b/tests/inputs/cii/02.02a-INVOICE_uncefact.xml
--- a/tests/inputs/cii/02.03a-INVOICE_uncefact.xml
+++ b/tests/inputs/cii/02.03a-INVOICE_uncefact.xml
--- a/tests/inputs/cii/02.04a-INVOICE_uncefact.xml
+++ b/tests/inputs/cii/02.04a-INVOICE_uncefact.xml
--- a/tests/inputs/cii/02.05a-INVOICE_uncefact.xml
+++ b/tests/inputs/cii/02.05a-INVOICE_uncefact.xml
--- a/tests/inputs/cii/02.06a-INVOICE_uncefact.xml
+++ b/tests/inputs/cii/02.06a-INVOICE_uncefact.xml
--- a/tests/inputs/cii/03.01a-INVOICE_uncefact.xml
+++ b/tests/inputs/cii/03.01a-INVOICE_uncefact.xml
--- a/tests/inputs/cii/03.02a-INVOICE_uncefact.xml
+++ b/tests/inputs/cii/03.02a-INVOICE_uncefact.xml
--- a/tests/inputs/cii/03.03a-INVOICE_uncefact.xml
+++ b/tests/inputs/cii/03.03a-INVOICE_uncefact.xml
@@ -0,0 +1,239 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<rsm:CrossIndustryInvoice
+    xmlns:rsm="urn:un:unece:uncefact:data:standard:CrossIndustryInvoice:100"
+    xmlns:ram="urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100"
+    xmlns:qdt="urn:un:unece:uncefact:data:standard:QualifiedDataType:100"
+    xmlns:udt="urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100">
+    <rsm:ExchangedDocumentContext>
+        <ram:BusinessProcessSpecifiedDocumentContextParameter>
+            <ram:ID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</ram:ID>
+        </ram:BusinessProcessSpecifiedDocumentContextParameter>
+        <ram:GuidelineSpecifiedDocumentContextParameter>
+            <ram:ID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</ram:ID>
+        </ram:GuidelineSpecifiedDocumentContextParameter>
+    </rsm:ExchangedDocumentContext>
+    <rsm:ExchangedDocument>
+        <ram:ID>0000123456</ram:ID>
+        <ram:TypeCode>380</ram:TypeCode>
+        <ram:IssueDateTime>
+            <udt:DateTimeString format="102">20171211</udt:DateTimeString>
+        </ram:IssueDateTime>
+        <ram:IncludedNote>
+            <ram:Content>[Invoice note]</ram:Content>
+            <ram:SubjectCode>ADU</ram:SubjectCode>
+        </ram:IncludedNote>
+    </rsm:ExchangedDocument>
+    <rsm:SupplyChainTradeTransaction>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>0</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:SellerAssignedID>1034</ram:SellerAssignedID>
+                <ram:Name>Anforderungsaufnahme</ram:Name>
+                <ram:Description>Anforderungmanagament</ram:Description>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>850</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">1</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>850</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>1</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:SellerAssignedID>1035</ram:SellerAssignedID>
+                <ram:Name>Lastenheft</ram:Name>
+                <ram:Description>Erstellung Lastenheft bis Abnahme</ram:Description>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>2986</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">1</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>2986</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>2</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:SellerAssignedID>1036</ram:SellerAssignedID>
+                <ram:Name>Pflichtenheft</ram:Name>
+                <ram:Description>Erstellung Pflichtenheft bis Abnahme</ram:Description>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>2344</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">1</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>2344</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:IncludedSupplyChainTradeLineItem>
+            <ram:AssociatedDocumentLineDocument>
+                <ram:LineID>3</ram:LineID>
+            </ram:AssociatedDocumentLineDocument>
+            <ram:SpecifiedTradeProduct>
+                <ram:SellerAssignedID>1037</ram:SellerAssignedID>
+                <ram:Name>Entwicklung</ram:Name>
+                <ram:Description>Entwicklung System bis Implementierung</ram:Description>
+            </ram:SpecifiedTradeProduct>
+            <ram:SpecifiedLineTradeAgreement>
+                <ram:NetPriceProductTradePrice>
+                    <ram:ChargeAmount>2800</ram:ChargeAmount>
+                </ram:NetPriceProductTradePrice>
+            </ram:SpecifiedLineTradeAgreement>
+            <ram:SpecifiedLineTradeDelivery>
+                <ram:BilledQuantity unitCode="XPP">1</ram:BilledQuantity>
+            </ram:SpecifiedLineTradeDelivery>
+            <ram:SpecifiedLineTradeSettlement>
+                <ram:ApplicableTradeTax>
+                    <ram:TypeCode>VAT</ram:TypeCode>
+                    <ram:CategoryCode>S</ram:CategoryCode>
+                    <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+                </ram:ApplicableTradeTax>
+                <ram:SpecifiedTradeSettlementLineMonetarySummation>
+                    <ram:LineTotalAmount>2800</ram:LineTotalAmount>
+                </ram:SpecifiedTradeSettlementLineMonetarySummation>
+            </ram:SpecifiedLineTradeSettlement>
+        </ram:IncludedSupplyChainTradeLineItem>
+        <ram:ApplicableHeaderTradeAgreement>
+            <ram:BuyerReference>11002002-98765-14</ram:BuyerReference>
+            <ram:SellerTradeParty>
+                <ram:Name>[Seller name]</ram:Name>
+                <ram:DefinedTradeContact>
+                    <ram:PersonName>[Seller contact person]</ram:PersonName>
+                    <ram:TelephoneUniversalCommunication>
+                        <ram:CompleteNumber>1234567890</ram:CompleteNumber>
+                    </ram:TelephoneUniversalCommunication>
+                    <ram:EmailURIUniversalCommunication>
+                        <ram:URIID>contact@seller.de</ram:URIID>
+                    </ram:EmailURIUniversalCommunication>
+                </ram:DefinedTradeContact>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>10623</ram:PostcodeCode>
+                    <ram:LineOne>[Seller street]</ram:LineOne>
+                    <ram:CityName>[Seller city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">seller@email.de</ram:URIID>
+                </ram:URIUniversalCommunication>
+                <ram:SpecifiedTaxRegistration>
+                    <ram:ID schemeID="VA">DE123456789</ram:ID>
+                </ram:SpecifiedTaxRegistration>
+            </ram:SellerTradeParty>
+            <ram:BuyerTradeParty>
+                <ram:Name>[Buyer name]</ram:Name>
+                <ram:DefinedTradeContact>
+                    <ram:PersonName>[Buyer contact person]</ram:PersonName>
+                    <ram:EmailURIUniversalCommunication>
+                        <ram:URIID>buyer@contact.com</ram:URIID>
+                    </ram:EmailURIUniversalCommunication>
+                </ram:DefinedTradeContact>
+                <ram:PostalTradeAddress>
+                    <ram:PostcodeCode>12345</ram:PostcodeCode>
+                    <ram:LineOne>[Buyer street]</ram:LineOne>
+                    <ram:CityName>[Buyer city]</ram:CityName>
+                    <ram:CountryID>DE</ram:CountryID>
+                </ram:PostalTradeAddress>
+                <ram:URIUniversalCommunication>
+                    <ram:URIID schemeID="EM">buyer@info.de</ram:URIID>
+                </ram:URIUniversalCommunication>
+            </ram:BuyerTradeParty>
+            <ram:BuyerOrderReferencedDocument>
+                <ram:IssuerAssignedID>10520</ram:IssuerAssignedID>
+            </ram:BuyerOrderReferencedDocument>
+            <ram:ContractReferencedDocument>
+                <ram:IssuerAssignedID>0000000752</ram:IssuerAssignedID>
+            </ram:ContractReferencedDocument>
+            <ram:AdditionalReferencedDocument>
+                <ram:IssuerAssignedID>01_15_Anhang_01</ram:IssuerAssignedID>
+                <ram:URIID>https://xeinkauf.de/xrechnung/</ram:URIID>
+                <ram:TypeCode>916</ram:TypeCode>
+                <ram:Name>Aufschlüsselung der einzelnen Leistungspositionen</ram:Name>                             
+            </ram:AdditionalReferencedDocument>
+            <ram:AdditionalReferencedDocument>
+                <ram:IssuerAssignedID>01_15_Anhang_02</ram:IssuerAssignedID>
+                <ram:URIID>https://xeinkauf.de/xrechnung/</ram:URIID>      
+                <ram:TypeCode>916</ram:TypeCode>
+                <ram:Name>Gesamtübersicht der Leistungspositionen</ram:Name>                       
+            </ram:AdditionalReferencedDocument>
+            <ram:SpecifiedProcuringProject>
+                <ram:ID>Entwicklung System</ram:ID>
+                <ram:Name>Project reference</ram:Name>
+            </ram:SpecifiedProcuringProject>
+        </ram:ApplicableHeaderTradeAgreement>
+        <ram:ApplicableHeaderTradeDelivery />
+        <ram:ApplicableHeaderTradeSettlement>            
+            <ram:InvoiceCurrencyCode>EUR</ram:InvoiceCurrencyCode>
+            <ram:SpecifiedTradeSettlementPaymentMeans>
+                <ram:TypeCode>48</ram:TypeCode>
+                <ram:ApplicableTradeSettlementFinancialCard>
+                    <ram:ID>41234</ram:ID>
+                    <ram:CardholderName>[Payment card holder name]</ram:CardholderName>
+                </ram:ApplicableTradeSettlementFinancialCard>
+            </ram:SpecifiedTradeSettlementPaymentMeans>
+            <ram:ApplicableTradeTax>
+                <ram:CalculatedAmount>1706.2</ram:CalculatedAmount>
+                <ram:TypeCode>VAT</ram:TypeCode>
+                <ram:BasisAmount>8980</ram:BasisAmount>
+                <ram:CategoryCode>S</ram:CategoryCode>
+                <ram:RateApplicablePercent>19</ram:RateApplicablePercent>
+            </ram:ApplicableTradeTax>
+            <ram:SpecifiedTradePaymentTerms>
+                <ram:Description>Bei Zahlungen binnen 14 Tagen, 2% Skonto</ram:Description>
+                <ram:DueDateDateTime>
+                    <udt:DateTimeString format="102"
+                        >20180110</udt:DateTimeString>
+                </ram:DueDateDateTime>
+            </ram:SpecifiedTradePaymentTerms>
+            <ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+                <ram:LineTotalAmount>8980</ram:LineTotalAmount>
+                <ram:TaxBasisTotalAmount>8980</ram:TaxBasisTotalAmount>
+                <ram:TaxTotalAmount currencyID="EUR">1706.2</ram:TaxTotalAmount>
+                <ram:GrandTotalAmount>10686.2</ram:GrandTotalAmount>
+                <ram:DuePayableAmount>10686.2</ram:DuePayableAmount>
+            </ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+        </ram:ApplicableHeaderTradeSettlement>
+    </rsm:SupplyChainTradeTransaction>
+</rsm:CrossIndustryInvoice>
--- a/tests/inputs/cii/03.04a-INVOICE_uncefact.xml
+++ b/tests/inputs/cii/03.04a-INVOICE_uncefact.xml
--- a/tests/inputs/cii/03.05a-INVOICE_uncefact.xml
+++ b/tests/inputs/cii/03.05a-INVOICE_uncefact.xml
--- a/tests/inputs/cii/03.06a-INVOICE_uncefact.xml
+++ b/tests/inputs/cii/03.06a-INVOICE_uncefact.xml
@@ -0,0 +1,251 @@
+<?xml version="1.0" encoding="utf-8"?>
+<rsm:CrossIndustryInvoice xmlns:rsm="urn:un:unece:uncefact:data:standard:CrossIndustryInvoice:100" xmlns:ram="urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:qdt="urn:un:unece:uncefact:data:standard:QualifiedDataType:100" xmlns:udt="urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100">
+   <rsm:ExchangedDocumentContext>
+      <ram:BusinessProcessSpecifiedDocumentContextParameter>
+         <ram:ID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</ram:ID>
+      </ram:BusinessProcessSpecifiedDocumentContextParameter>
+      <ram:GuidelineSpecifiedDocumentContextParameter>
+         <ram:ID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</ram:ID>
+      </ram:GuidelineSpecifiedDocumentContextParameter>
+   </rsm:ExchangedDocumentContext>
+   <rsm:ExchangedDocument>
+      <ram:ID>112233</ram:ID>
+      <ram:TypeCode>380</ram:TypeCode>
+      <ram:IssueDateTime>
+         <udt:DateTimeString format="102">20210423</udt:DateTimeString>
+      </ram:IssueDateTime>
+      <ram:IncludedNote>
+         <ram:Content>Rechnung enthält 100 EUR (Umsatz)Steuer auf Altteile gem. Abschn. 10.5 Abs. 3 UStAE</ram:Content>
+         <ram:SubjectCode>ADU</ram:SubjectCode>
+      </ram:IncludedNote>
+   </rsm:ExchangedDocument>
+   <rsm:SupplyChainTradeTransaction>
+      <ram:IncludedSupplyChainTradeLineItem>
+         <ram:AssociatedDocumentLineDocument>
+            <ram:LineID>1</ram:LineID>
+         </ram:AssociatedDocumentLineDocument>
+         <ram:SpecifiedTradeProduct>
+            <ram:Name>Neumotor</ram:Name>
+         </ram:SpecifiedTradeProduct>
+         <ram:SpecifiedLineTradeAgreement>
+            <ram:GrossPriceProductTradePrice>
+               <ram:ChargeAmount>1010.00</ram:ChargeAmount>
+               <ram:AppliedTradeAllowanceCharge>
+                  <ram:ChargeIndicator>
+                     <udt:Indicator>false</udt:Indicator>
+                  </ram:ChargeIndicator>
+                  <ram:ActualAmount>10.000000000000000000</ram:ActualAmount>
+               </ram:AppliedTradeAllowanceCharge>
+            </ram:GrossPriceProductTradePrice>
+            <ram:NetPriceProductTradePrice>
+               <ram:ChargeAmount>1000.00</ram:ChargeAmount>
+            </ram:NetPriceProductTradePrice>
+         </ram:SpecifiedLineTradeAgreement>
+         <ram:SpecifiedLineTradeDelivery>
+            <ram:BilledQuantity unitCode="C62">1.00</ram:BilledQuantity>
+         </ram:SpecifiedLineTradeDelivery>
+         <ram:SpecifiedLineTradeSettlement>
+            <ram:ApplicableTradeTax>
+               <ram:TypeCode>VAT</ram:TypeCode>
+               <ram:CategoryCode>S</ram:CategoryCode>
+               <ram:RateApplicablePercent>19.00</ram:RateApplicablePercent>
+            </ram:ApplicableTradeTax>
+            <ram:SpecifiedTradeSettlementLineMonetarySummation>
+               <ram:LineTotalAmount>1000.00</ram:LineTotalAmount>
+            </ram:SpecifiedTradeSettlementLineMonetarySummation>
+         </ram:SpecifiedLineTradeSettlement>
+      </ram:IncludedSupplyChainTradeLineItem>
+      <ram:IncludedSupplyChainTradeLineItem>
+         <ram:AssociatedDocumentLineDocument>
+            <ram:LineID>2</ram:LineID>
+         </ram:AssociatedDocumentLineDocument>
+         <ram:SpecifiedTradeProduct>
+            <ram:Name>Bemessungsgrundlage und Umsatzsteuer auf Altteil</ram:Name>
+         </ram:SpecifiedTradeProduct>
+         <ram:SpecifiedLineTradeAgreement>
+            <ram:GrossPriceProductTradePrice>
+               <ram:ChargeAmount>110.00</ram:ChargeAmount>
+               <ram:AppliedTradeAllowanceCharge>
+                  <ram:ChargeIndicator>
+                     <udt:Indicator>false</udt:Indicator>
+                  </ram:ChargeIndicator>
+                  <ram:ActualAmount>10.000000000000000000</ram:ActualAmount>
+               </ram:AppliedTradeAllowanceCharge>
+            </ram:GrossPriceProductTradePrice>
+            <ram:NetPriceProductTradePrice>
+               <ram:ChargeAmount>100.00</ram:ChargeAmount>
+            </ram:NetPriceProductTradePrice>
+         </ram:SpecifiedLineTradeAgreement>
+         <ram:SpecifiedLineTradeDelivery>
+            <ram:BilledQuantity unitCode="C62">1.00</ram:BilledQuantity>
+         </ram:SpecifiedLineTradeDelivery>
+         <ram:SpecifiedLineTradeSettlement>
+            <ram:ApplicableTradeTax>
+               <ram:TypeCode>VAT</ram:TypeCode>
+               <ram:CategoryCode>S</ram:CategoryCode>
+               <ram:RateApplicablePercent>19.00</ram:RateApplicablePercent>
+            </ram:ApplicableTradeTax>
+            <ram:SpecifiedTradeSettlementLineMonetarySummation>
+               <ram:LineTotalAmount>100.00</ram:LineTotalAmount>
+            </ram:SpecifiedTradeSettlementLineMonetarySummation>
+         </ram:SpecifiedLineTradeSettlement>
+      </ram:IncludedSupplyChainTradeLineItem>
+      <ram:IncludedSupplyChainTradeLineItem>
+         <ram:AssociatedDocumentLineDocument>
+            <ram:LineID>3</ram:LineID>
+         </ram:AssociatedDocumentLineDocument>
+         <ram:SpecifiedTradeProduct>
+            <ram:Name>Korrektur/Stornierung Bemessungsgrundlage der Umsatzsteuer auf Altteil</ram:Name>
+         </ram:SpecifiedTradeProduct>
+         <ram:SpecifiedLineTradeAgreement>
+            <ram:GrossPriceProductTradePrice>
+               <ram:ChargeAmount>110.00</ram:ChargeAmount>
+               <ram:AppliedTradeAllowanceCharge>
+                  <ram:ChargeIndicator>
+                     <udt:Indicator>false</udt:Indicator>
+                  </ram:ChargeIndicator>
+                  <ram:ActualAmount>10.00</ram:ActualAmount>
+               </ram:AppliedTradeAllowanceCharge>
+            </ram:GrossPriceProductTradePrice>
+            <ram:NetPriceProductTradePrice>
+               <ram:ChargeAmount>100.00</ram:ChargeAmount>
+            </ram:NetPriceProductTradePrice>
+         </ram:SpecifiedLineTradeAgreement>
+         <ram:SpecifiedLineTradeDelivery>
+            <ram:BilledQuantity unitCode="C62">-1.00</ram:BilledQuantity>
+         </ram:SpecifiedLineTradeDelivery>
+         <ram:SpecifiedLineTradeSettlement>
+            <ram:ApplicableTradeTax>
+               <ram:TypeCode>VAT</ram:TypeCode>
+               <ram:CategoryCode>Z</ram:CategoryCode>
+               <ram:RateApplicablePercent>0.00</ram:RateApplicablePercent>
+            </ram:ApplicableTradeTax>
+            <ram:SpecifiedTradeSettlementLineMonetarySummation>
+               <ram:LineTotalAmount>-100.00</ram:LineTotalAmount>
+            </ram:SpecifiedTradeSettlementLineMonetarySummation>
+         </ram:SpecifiedLineTradeSettlement>
+      </ram:IncludedSupplyChainTradeLineItem>
+      <ram:IncludedSupplyChainTradeLineItem>
+         <ram:AssociatedDocumentLineDocument>
+            <ram:LineID>4</ram:LineID>
+         </ram:AssociatedDocumentLineDocument>
+         <ram:SpecifiedTradeProduct>
+            <ram:Name>Montage</ram:Name>
+         </ram:SpecifiedTradeProduct>
+         <ram:SpecifiedLineTradeAgreement>
+            <ram:GrossPriceProductTradePrice>
+               <ram:ChargeAmount>510.00</ram:ChargeAmount>
+               <ram:AppliedTradeAllowanceCharge>
+                  <ram:ChargeIndicator>
+                     <udt:Indicator>false</udt:Indicator>
+                  </ram:ChargeIndicator>
+                  <ram:ActualAmount>10.00</ram:ActualAmount>
+               </ram:AppliedTradeAllowanceCharge>
+            </ram:GrossPriceProductTradePrice>
+            <ram:NetPriceProductTradePrice>
+               <ram:ChargeAmount>500.00</ram:ChargeAmount>
+            </ram:NetPriceProductTradePrice>
+         </ram:SpecifiedLineTradeAgreement>
+         <ram:SpecifiedLineTradeDelivery>
+            <ram:BilledQuantity unitCode="HUR">1.00</ram:BilledQuantity>
+         </ram:SpecifiedLineTradeDelivery>
+         <ram:SpecifiedLineTradeSettlement>
+            <ram:ApplicableTradeTax>
+               <ram:TypeCode>VAT</ram:TypeCode>
+               <ram:CategoryCode>S</ram:CategoryCode>
+               <ram:RateApplicablePercent>19.00</ram:RateApplicablePercent>
+            </ram:ApplicableTradeTax>
+            <ram:SpecifiedTradeSettlementLineMonetarySummation>
+               <ram:LineTotalAmount>500.00</ram:LineTotalAmount>
+            </ram:SpecifiedTradeSettlementLineMonetarySummation>
+         </ram:SpecifiedLineTradeSettlement>
+      </ram:IncludedSupplyChainTradeLineItem>
+      <ram:ApplicableHeaderTradeAgreement>
+         <ram:BuyerReference>991-33333TEST-33</ram:BuyerReference>
+         <ram:SellerTradeParty>
+            <ram:ID>116078</ram:ID>
+            <ram:Name>Testverkäufer</ram:Name>
+            <ram:DefinedTradeContact>
+               <ram:PersonName>Test</ram:PersonName>
+               <ram:TelephoneUniversalCommunication>
+                  <ram:CompleteNumber>123456789</ram:CompleteNumber>
+               </ram:TelephoneUniversalCommunication>
+               <ram:EmailURIUniversalCommunication>
+                  <ram:URIID>test@test.de</ram:URIID>
+               </ram:EmailURIUniversalCommunication>
+            </ram:DefinedTradeContact>
+            <ram:PostalTradeAddress>
+               <ram:PostcodeCode>12345</ram:PostcodeCode>
+               <ram:LineOne>Teststraße</ram:LineOne>
+               <ram:CityName>Testhausen</ram:CityName>
+               <ram:CountryID>DE</ram:CountryID>
+            </ram:PostalTradeAddress>
+            <ram:URIUniversalCommunication>
+               <ram:URIID schemeID="EM">seller@email.de</ram:URIID>
+            </ram:URIUniversalCommunication>
+            <ram:SpecifiedTaxRegistration>
+               <ram:ID schemeID="FC">1121081508150</ram:ID>
+            </ram:SpecifiedTaxRegistration>
+            <ram:SpecifiedTaxRegistration>
+               <ram:ID schemeID="VA">DE12345464867</ram:ID>
+            </ram:SpecifiedTaxRegistration>
+         </ram:SellerTradeParty>
+         <ram:BuyerTradeParty>
+            <ram:Name>Testkäufer</ram:Name>
+            <ram:PostalTradeAddress>
+               <ram:PostcodeCode>12345</ram:PostcodeCode>
+               <ram:LineOne>Teststraße</ram:LineOne>
+               <ram:CityName>Testhausen</ram:CityName>
+               <ram:CountryID>DE</ram:CountryID>
+            </ram:PostalTradeAddress>
+            <ram:URIUniversalCommunication>
+               <ram:URIID schemeID="EM">buyer@info.de</ram:URIID>
+            </ram:URIUniversalCommunication>
+         </ram:BuyerTradeParty>
+      </ram:ApplicableHeaderTradeAgreement>
+      <ram:ApplicableHeaderTradeDelivery>
+         <ram:ActualDeliverySupplyChainEvent>
+            <ram:OccurrenceDateTime>
+               <udt:DateTimeString format="102">20201123</udt:DateTimeString>
+            </ram:OccurrenceDateTime>
+         </ram:ActualDeliverySupplyChainEvent>
+      </ram:ApplicableHeaderTradeDelivery>
+      <ram:ApplicableHeaderTradeSettlement>
+         <ram:InvoiceCurrencyCode>EUR</ram:InvoiceCurrencyCode>
+         <ram:SpecifiedTradeSettlementPaymentMeans>
+            <ram:TypeCode>58</ram:TypeCode>
+            <ram:Information>SEPA-Überweisung</ram:Information>
+            <ram:PayeePartyCreditorFinancialAccount>
+               <ram:IBANID>DE21081508151234123412</ram:IBANID>
+               <ram:AccountName>Testkäufer</ram:AccountName>
+            </ram:PayeePartyCreditorFinancialAccount>
+         </ram:SpecifiedTradeSettlementPaymentMeans>
+         <ram:ApplicableTradeTax>
+            <ram:CalculatedAmount>304.00</ram:CalculatedAmount>
+            <ram:TypeCode>VAT</ram:TypeCode>
+            <ram:BasisAmount>1600.00</ram:BasisAmount>
+            <ram:CategoryCode>S</ram:CategoryCode>
+            <ram:RateApplicablePercent>19.00</ram:RateApplicablePercent>
+         </ram:ApplicableTradeTax>
+         <ram:ApplicableTradeTax>
+            <ram:CalculatedAmount>0.00</ram:CalculatedAmount>
+            <ram:TypeCode>VAT</ram:TypeCode>
+            <ram:BasisAmount>-100.00</ram:BasisAmount>
+            <ram:CategoryCode>Z</ram:CategoryCode>
+            <ram:RateApplicablePercent>0.00</ram:RateApplicablePercent>
+         </ram:ApplicableTradeTax>
+         <ram:SpecifiedTradePaymentTerms>
+            <ram:DueDateDateTime>
+               <udt:DateTimeString format="102">20210428</udt:DateTimeString>
+            </ram:DueDateDateTime>
+         </ram:SpecifiedTradePaymentTerms>
+         <ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+            <ram:LineTotalAmount>1500.00</ram:LineTotalAmount>
+            <ram:TaxBasisTotalAmount>1500.00</ram:TaxBasisTotalAmount>
+            <ram:TaxTotalAmount currencyID="EUR">304.00</ram:TaxTotalAmount>
+            <ram:GrandTotalAmount>1804.00</ram:GrandTotalAmount>
+            <ram:DuePayableAmount>1804.00</ram:DuePayableAmount>
+         </ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+      </ram:ApplicableHeaderTradeSettlement>
+   </rsm:SupplyChainTradeTransaction>
+</rsm:CrossIndustryInvoice>
--- a/tests/inputs/cii/04.05a-INVOICE_uncefact.xml
+++ b/tests/inputs/cii/04.05a-INVOICE_uncefact.xml
@@ -0,0 +1,173 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+   - Copyright © 2020 BITMARCK Service GmbH
+   -
+   - Licensed under the Apache License, Version 2.0 (the "License");
+   - you may not use this file except in compliance with the License.
+   - You may obtain a copy of the License at
+   -
+   -     http://www.apache.org/licenses/LICENSE-2.0
+   -
+   - Unless required by applicable law or agreed to in writing, software
+   - distributed under the License is distributed on an "AS IS" BASIS,
+   - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   - See the License for the specific language governing permissions and
+   - limitations under the License.
+   -->
+<rsm:CrossIndustryInvoice xmlns:rsm="urn:un:unece:uncefact:data:standard:CrossIndustryInvoice:100"
+  xmlns:ram="urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100"
+  xmlns:udt="urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100">
+  <rsm:ExchangedDocumentContext>
+    <ram:BusinessProcessSpecifiedDocumentContextParameter>
+      <ram:ID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</ram:ID>
+    </ram:BusinessProcessSpecifiedDocumentContextParameter>
+    <ram:GuidelineSpecifiedDocumentContextParameter>
+      <ram:ID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0#conformant#urn:xeinkauf.de:kosit:extension:xrechnung_3.0</ram:ID>
+    </ram:GuidelineSpecifiedDocumentContextParameter>
+  </rsm:ExchangedDocumentContext>
+  <rsm:ExchangedDocument>
+    <ram:ID>2020-1</ram:ID>
+    <ram:TypeCode>380</ram:TypeCode>
+    <ram:IssueDateTime>
+      <udt:DateTimeString format="102">20200103</udt:DateTimeString>
+    </ram:IssueDateTime>
+    <ram:IncludedNote>
+      <ram:Content>Eine Testrechnung für das Projekt DiGA-Rechnung.</ram:Content>
+    </ram:IncludedNote>
+  </rsm:ExchangedDocument>
+  <rsm:SupplyChainTradeTransaction>
+    <ram:IncludedSupplyChainTradeLineItem>
+      <ram:AssociatedDocumentLineDocument>
+        <ram:LineID>TEST_POSITION_01</ram:LineID>
+      </ram:AssociatedDocumentLineDocument>
+      <ram:SpecifiedTradeProduct>
+        <!-- DiGA-VE-ID: -->
+        <ram:GlobalID schemeID="XR01">12345678</ram:GlobalID>
+        <!-- Freischaltcode: -->
+        <ram:BuyerAssignedID>ABCDEFGHIJKLMNOP</ram:BuyerAssignedID>
+        <!-- DiGA-Name: -->
+        <ram:Name>Tinnitus Rex</ram:Name>
+        <ram:Description>Ein Artikel für Testrechnungen.</ram:Description>
+        <!--
+                <ram:IndividualTradeProductInstance>
+                    <ram:SellByDateTime>
+                        &lt;!&ndash; Tag der Leistungserbringung &ndash;&gt;
+                        <udt:DateTimeString format="102">20200102</udt:DateTimeString>
+                    </ram:SellByDateTime>
+                </ram:IndividualTradeProductInstance>
+-->
+      </ram:SpecifiedTradeProduct>
+      <ram:SpecifiedLineTradeAgreement>
+        <ram:NetPriceProductTradePrice>
+          <ram:ChargeAmount>100.00</ram:ChargeAmount>
+        </ram:NetPriceProductTradePrice>
+      </ram:SpecifiedLineTradeAgreement>
+      <ram:SpecifiedLineTradeDelivery>
+        <!-- Eine Packungseinheit: -->
+        <ram:BilledQuantity unitCode="C62">1</ram:BilledQuantity>
+      </ram:SpecifiedLineTradeDelivery>
+      <ram:SpecifiedLineTradeSettlement>
+        <ram:ApplicableTradeTax>
+          <ram:TypeCode>VAT</ram:TypeCode>
+          <ram:CategoryCode>S</ram:CategoryCode>
+          <ram:RateApplicablePercent>19.00</ram:RateApplicablePercent>
+        </ram:ApplicableTradeTax>
+        <ram:SpecifiedTradeSettlementLineMonetarySummation>
+          <ram:LineTotalAmount>100.00</ram:LineTotalAmount>
+        </ram:SpecifiedTradeSettlementLineMonetarySummation>
+      </ram:SpecifiedLineTradeSettlement>
+    </ram:IncludedSupplyChainTradeLineItem>
+    <ram:ApplicableHeaderTradeAgreement>
+      <ram:BuyerReference>Leitweg-ID</ram:BuyerReference>
+      <ram:SellerTradeParty>
+        <ram:ID>TEST_RECHNUNGSSTELLER</ram:ID>
+        <!-- IK des DiGA-Herstellers als "Seller Identifier" (BT-29) [BR-CO-26]: -->
+        <ram:GlobalID schemeID="XR03">987654321</ram:GlobalID>
+        <ram:Name>Rechnungssteller</ram:Name>
+        <ram:DefinedTradeContact>
+          <ram:PersonName>Max Mustermann</ram:PersonName>
+          <ram:TelephoneUniversalCommunication>
+            <ram:CompleteNumber>+49 000 001 0001</ram:CompleteNumber>
+          </ram:TelephoneUniversalCommunication>
+          <ram:EmailURIUniversalCommunication>
+            <ram:URIID>max.mustermann@rechnungssteller.de</ram:URIID>
+          </ram:EmailURIUniversalCommunication>
+        </ram:DefinedTradeContact>
+        <ram:PostalTradeAddress>
+          <ram:PostcodeCode>01234</ram:PostcodeCode>
+          <ram:LineOne>Musterstraße 1</ram:LineOne>
+          <ram:CityName>Berlin</ram:CityName>
+          <ram:CountryID>DE</ram:CountryID>
+        </ram:PostalTradeAddress>
+        <ram:URIUniversalCommunication>
+          <ram:URIID schemeID="EM">seller@email.de</ram:URIID>
+        </ram:URIUniversalCommunication>
+        <ram:SpecifiedTaxRegistration>
+          <ram:ID schemeID="VA">DE 123 456 789</ram:ID>
+        </ram:SpecifiedTaxRegistration>
+      </ram:SellerTradeParty>
+      <ram:BuyerTradeParty>
+        <!-- IK der Krankenkasse als "Buyer Identifier" (BT-46): -->
+        <ram:GlobalID schemeID="XR03">123456789</ram:GlobalID>
+        <ram:Name>Rechnungsempfänger</ram:Name>
+        <ram:PostalTradeAddress>
+          <ram:PostcodeCode>01234</ram:PostcodeCode>
+          <ram:LineOne>Musterstraße 2</ram:LineOne>
+          <ram:CityName>Berlin</ram:CityName>
+          <ram:CountryID>DE</ram:CountryID>
+        </ram:PostalTradeAddress>
+        <ram:URIUniversalCommunication>
+          <ram:URIID schemeID="EM">buyer@info.de</ram:URIID>
+        </ram:URIUniversalCommunication>
+      </ram:BuyerTradeParty>
+    </ram:ApplicableHeaderTradeAgreement>
+    <ram:ApplicableHeaderTradeDelivery>
+      <ram:ActualDeliverySupplyChainEvent>
+        <ram:OccurrenceDateTime>
+          <!-- Tag der Leistungserbringung -->
+          <udt:DateTimeString format="102">20200102</udt:DateTimeString>
+        </ram:OccurrenceDateTime>
+      </ram:ActualDeliverySupplyChainEvent>
+    </ram:ApplicableHeaderTradeDelivery>
+    <ram:ApplicableHeaderTradeSettlement>
+      <!-- IK des Zahlungsempfängers als "Payee Identifier" (BT-60): -->
+      <!--<ram:CreditorReferenceID schemeID="IK">987654322</ram:CreditorReferenceID>-->
+      <!--
+            <ram:TaxCurrencyCode>EUR</ram:TaxCurrencyCode>
+-->
+      <ram:InvoiceCurrencyCode>EUR</ram:InvoiceCurrencyCode>
+      <ram:PayeeTradeParty>
+        <!-- IK des Zahlungsempfängers als "Payee Identifier" (BT-60): -->
+        <ram:GlobalID schemeID="XR03">987654322</ram:GlobalID>
+        <ram:Name>Payee</ram:Name>
+      </ram:PayeeTradeParty>
+      
+      <ram:SpecifiedTradeSettlementPaymentMeans>
+        <ram:TypeCode>30</ram:TypeCode>
+        <ram:PayeePartyCreditorFinancialAccount>
+          <!-- IBAN -->
+          <ram:IBANID>DE75512108001245126199</ram:IBANID>
+        </ram:PayeePartyCreditorFinancialAccount>
+      </ram:SpecifiedTradeSettlementPaymentMeans>
+      <ram:ApplicableTradeTax>
+        <ram:CalculatedAmount>19.00</ram:CalculatedAmount>
+        <ram:TypeCode>VAT</ram:TypeCode>
+        <ram:BasisAmount>100.00</ram:BasisAmount>
+        <ram:CategoryCode>S</ram:CategoryCode>
+        <ram:RateApplicablePercent>19.00</ram:RateApplicablePercent>
+      </ram:ApplicableTradeTax>
+      <ram:SpecifiedTradePaymentTerms>
+        <ram:DueDateDateTime>
+          <udt:DateTimeString format="102">20200117</udt:DateTimeString>
+        </ram:DueDateDateTime>
+      </ram:SpecifiedTradePaymentTerms>
+      <ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+        <ram:LineTotalAmount>100.00</ram:LineTotalAmount>
+        <ram:TaxBasisTotalAmount>100.00</ram:TaxBasisTotalAmount>
+        <ram:TaxTotalAmount currencyID="EUR">19.00</ram:TaxTotalAmount>
+        <ram:GrandTotalAmount>119.00</ram:GrandTotalAmount>
+        <ram:DuePayableAmount>119.00</ram:DuePayableAmount>
+      </ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+    </ram:ApplicableHeaderTradeSettlement>
+  </rsm:SupplyChainTradeTransaction>
+</rsm:CrossIndustryInvoice>
--- a/tests/inputs/ubl/01.01_comprehensive_test_ubl.xml
+++ b/tests/inputs/ubl/01.01_comprehensive_test_ubl.xml
--- a/tests/inputs/ubl/01.01a-INVOICE_ubl.xml
+++ b/tests/inputs/ubl/01.01a-INVOICE_ubl.xml
@@ -0,0 +1,145 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ubl:Invoice xmlns:ubl="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2"
+             xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2"
+             xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2">
+    <cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</cbc:CustomizationID>
+    <cbc:ProfileID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</cbc:ProfileID>
+    <cbc:ID>123456XX</cbc:ID>
+    <cbc:IssueDate>2016-04-04</cbc:IssueDate>
+    <cbc:InvoiceTypeCode>380</cbc:InvoiceTypeCode>
+    <cbc:Note>#ADU#Es gelten unsere Allgem. Geschäftsbedingungen, die Sie unter […] finden.</cbc:Note>
+    <cbc:DocumentCurrencyCode>EUR</cbc:DocumentCurrencyCode>
+    <cbc:BuyerReference>04011000-12345-03</cbc:BuyerReference>
+    <cac:AccountingSupplierParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">seller@email.de</cbc:EndpointID>
+            <cac:PartyName>
+                <cbc:Name>[Seller trading name]</cbc:Name>
+            </cac:PartyName>
+            <cac:PostalAddress>
+                <cbc:StreetName>[Seller address line 1]</cbc:StreetName>
+                <cbc:CityName>[Seller city]</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyTaxScheme>
+                <cbc:CompanyID>DE 123456789</cbc:CompanyID>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:PartyTaxScheme>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>[Seller name]</cbc:RegistrationName>
+                <cbc:CompanyID>[HRA-Eintrag]</cbc:CompanyID>
+                <cbc:CompanyLegalForm>123/456/7890, HRA-Eintrag in […]</cbc:CompanyLegalForm>
+            </cac:PartyLegalEntity>
+            <cac:Contact>
+                <cbc:Name>nicht vorhanden</cbc:Name>
+                <cbc:Telephone>+49 1234-5678</cbc:Telephone>
+                <cbc:ElectronicMail>seller@email.de</cbc:ElectronicMail>
+            </cac:Contact>
+        </cac:Party>
+    </cac:AccountingSupplierParty>
+    <cac:AccountingCustomerParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">buyer@info.de</cbc:EndpointID>
+            <cac:PartyIdentification>
+                <cbc:ID>[Buyer identifier]</cbc:ID>
+            </cac:PartyIdentification>
+            <cac:PostalAddress>
+                <cbc:StreetName>[Buyer address line 1]</cbc:StreetName>
+                <cbc:CityName>[Buyer city]</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>[Buyer name]</cbc:RegistrationName>
+            </cac:PartyLegalEntity>
+        </cac:Party>
+    </cac:AccountingCustomerParty>
+    <cac:PaymentMeans>
+        <cbc:PaymentMeansCode>58</cbc:PaymentMeansCode>
+        <cac:PayeeFinancialAccount>
+            <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+            <cbc:ID>DE75512108001245126199</cbc:ID>
+        </cac:PayeeFinancialAccount>
+    </cac:PaymentMeans>
+    <cac:PaymentTerms>
+        <cbc:Note>Zahlbar sofort ohne Abzug.</cbc:Note>
+    </cac:PaymentTerms>
+    <cac:TaxTotal>
+        <cbc:TaxAmount currencyID="EUR">22.04</cbc:TaxAmount>
+        <cac:TaxSubtotal>
+            <cbc:TaxableAmount currencyID="EUR">314.86</cbc:TaxableAmount>
+            <cbc:TaxAmount currencyID="EUR">22.04</cbc:TaxAmount>
+            <cac:TaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>7</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:TaxCategory>
+        </cac:TaxSubtotal>
+    </cac:TaxTotal>
+    <cac:LegalMonetaryTotal>
+        <cbc:LineExtensionAmount currencyID="EUR">314.86</cbc:LineExtensionAmount>
+        <cbc:TaxExclusiveAmount currencyID="EUR">314.86</cbc:TaxExclusiveAmount>
+        <cbc:TaxInclusiveAmount currencyID="EUR">336.9</cbc:TaxInclusiveAmount>
+        <cbc:PayableAmount currencyID="EUR">336.9</cbc:PayableAmount>
+    </cac:LegalMonetaryTotal>
+    <cac:InvoiceLine>
+        <cbc:ID>Zeitschrift [...]</cbc:ID>
+        <cbc:Note>Die letzte Lieferung im Rahmen des abgerechneten Abonnements erfolgt in 12/2016 Lieferung erfolgt / erfolgte direkt vom Verlag</cbc:Note>
+        <cbc:InvoicedQuantity unitCode="XPP">1</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">288.79</cbc:LineExtensionAmount>
+        <cac:InvoicePeriod>
+            <cbc:StartDate>2016-01-01</cbc:StartDate>
+            <cbc:EndDate>2016-12-31</cbc:EndDate>
+        </cac:InvoicePeriod>
+        <cac:OrderLineReference>
+            <cbc:LineID>6171175.1</cbc:LineID>
+        </cac:OrderLineReference>
+        <cac:Item>
+            <cbc:Description>Zeitschrift Inland</cbc:Description>
+            <cbc:Name>Zeitschrift [...]</cbc:Name>
+            <cac:SellersItemIdentification>
+                <cbc:ID>246</cbc:ID>
+            </cac:SellersItemIdentification>
+            <cac:CommodityClassification>
+                <cbc:ItemClassificationCode listID="IB">0721-880X</cbc:ItemClassificationCode>
+            </cac:CommodityClassification>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>7</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">288.79</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+    <cac:InvoiceLine>
+        <cbc:ID>Porto + Versandkosten</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">1</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">26.07</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Porto + Versandkosten</cbc:Name>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>7</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">26.07</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+</ubl:Invoice>
--- a/tests/inputs/ubl/01.02_comprehensive_test_ubl.xml
+++ b/tests/inputs/ubl/01.02_comprehensive_test_ubl.xml
--- a/tests/inputs/ubl/01.02a-INVOICE_ubl.xml
+++ b/tests/inputs/ubl/01.02a-INVOICE_ubl.xml
@@ -0,0 +1,134 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ubl:Invoice xmlns:ubl="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2"
+             xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2"
+             xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2">
+    <cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</cbc:CustomizationID>
+    <cbc:ProfileID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</cbc:ProfileID>
+    <cbc:ID>123456</cbc:ID>
+    <cbc:IssueDate>2016-06-21</cbc:IssueDate>
+    <cbc:InvoiceTypeCode>380</cbc:InvoiceTypeCode>
+    <cbc:Note>#ADU#Bei Fragen zu Ihrer Rechnung wenden Sie sich bitte an unseren Kundenserivce. Sie erreichen uns per Email: […], Tel.: […] oder Fax: […]</cbc:Note>
+    <cbc:Note>#ADU#Die Lieferung erfolgt aufgrund der AGB […] erhältlich unter […]. Auf Wunsch senden wir sie auch zu.</cbc:Note>
+    <cbc:Note>#ADU#Hinweis gemäß § 33 BDSG: Kundendaten werden gespeichert.</cbc:Note>
+    <cbc:Note>#ADU#Beschädigt eingehende Sendungen bitte sofort beim Spediteur bzw. Paketdienstleister reklamieren. Genehmigte Rücksendungen schicken Sie bitte mit den Unterlagen an: […]</cbc:Note>
+    <cbc:DocumentCurrencyCode>EUR</cbc:DocumentCurrencyCode>
+    <cbc:BuyerReference>04011000-12346-97</cbc:BuyerReference>
+    <cac:OrderReference>
+        <cbc:ID>Dummywert</cbc:ID>
+        <cbc:SalesOrderID>SO12345678</cbc:SalesOrderID>
+    </cac:OrderReference>
+    <cac:AccountingSupplierParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">seller@email.de</cbc:EndpointID>
+            <cac:PartyName>
+                <cbc:Name>[Seller trading name]</cbc:Name>
+            </cac:PartyName>
+            <cac:PostalAddress>
+                <cbc:StreetName>[Seller address line 1]</cbc:StreetName>
+                <cbc:CityName>[Seller city]</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyTaxScheme>
+                <cbc:CompanyID>DE123456789</cbc:CompanyID>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:PartyTaxScheme>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>[Seller name]</cbc:RegistrationName>
+                <cbc:CompanyID>[HRB-Eintrag]</cbc:CompanyID>
+                <cbc:CompanyLegalForm>Geschäftsführer: […], Sitz der GmbH ist […], Amtsgericht […]</cbc:CompanyLegalForm>
+            </cac:PartyLegalEntity>
+            <cac:Contact>
+                <cbc:Name>-</cbc:Name>
+                <cbc:Telephone>[012-3456789]</cbc:Telephone>
+                <cbc:ElectronicMail>Seller@email.de</cbc:ElectronicMail>
+            </cac:Contact>
+        </cac:Party>
+    </cac:AccountingSupplierParty>
+    <cac:AccountingCustomerParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">buyer@info.de</cbc:EndpointID>
+            <cac:PartyIdentification>
+                <cbc:ID>BI12345678</cbc:ID>
+            </cac:PartyIdentification>
+            <cac:PostalAddress>
+                <cbc:StreetName>[Buyer address line 1]</cbc:StreetName>
+                <cbc:CityName>[Buyer city]</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>[Buyer name]</cbc:RegistrationName>
+            </cac:PartyLegalEntity>
+            <cac:Contact>
+                <cbc:Name>[Buyer contact person]</cbc:Name>
+            </cac:Contact>
+        </cac:Party>
+    </cac:AccountingCustomerParty>
+    <cac:PayeeParty>
+        <cac:PartyName>
+            <cbc:Name>VSB - Verlagsservice Braunschweig GmbH</cbc:Name>
+        </cac:PartyName>
+    </cac:PayeeParty>
+    <cac:Delivery>
+        <cbc:ActualDeliveryDate>2016-06-21</cbc:ActualDeliveryDate>
+    </cac:Delivery>
+    <cac:PaymentMeans>
+        <cbc:PaymentMeansCode>58</cbc:PaymentMeansCode>
+        <cac:PayeeFinancialAccount>
+            <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+            <cbc:ID>DE75512108001245126199</cbc:ID>
+        </cac:PayeeFinancialAccount>
+    </cac:PaymentMeans>
+    <cac:PaymentTerms>
+        <cbc:Note>Bitte überweisen Sie den Betrag innerhalb von 14 Tagen auf unten stehendes Konto. Das Rechnungsdatum entspricht dem Versanddatum.</cbc:Note>
+    </cac:PaymentTerms>
+    <cac:TaxTotal>
+        <cbc:TaxAmount currencyID="EUR">0.82</cbc:TaxAmount>
+        <cac:TaxSubtotal>
+            <cbc:TaxableAmount currencyID="EUR">11.78</cbc:TaxableAmount>
+            <cbc:TaxAmount currencyID="EUR">0.82</cbc:TaxAmount>
+            <cac:TaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>7</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:TaxCategory>
+        </cac:TaxSubtotal>
+    </cac:TaxTotal>
+    <cac:LegalMonetaryTotal>
+        <cbc:LineExtensionAmount currencyID="EUR">11.78</cbc:LineExtensionAmount>
+        <cbc:TaxExclusiveAmount currencyID="EUR">11.78</cbc:TaxExclusiveAmount>
+        <cbc:TaxInclusiveAmount currencyID="EUR">12.6</cbc:TaxInclusiveAmount>
+        <cbc:PayableAmount currencyID="EUR">12.6</cbc:PayableAmount>
+    </cac:LegalMonetaryTotal>
+    <cac:InvoiceLine>
+        <cbc:ID>SZ300540</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">1</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">11.78</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Description>Einblicke v. Deutschlands wicht. Ökonomen</cbc:Description>
+            <cbc:Name>Denk doch, wie du willst</cbc:Name>
+            <cac:SellersItemIdentification>
+                <cbc:ID>SZ300540</cbc:ID>
+            </cac:SellersItemIdentification>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>7</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">11.78</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+</ubl:Invoice>
--- a/tests/inputs/ubl/01.03_comprehensive_test_ubl.xml
+++ b/tests/inputs/ubl/01.03_comprehensive_test_ubl.xml
--- a/tests/inputs/ubl/01.03a-INVOICE_ubl.xml
+++ b/tests/inputs/ubl/01.03a-INVOICE_ubl.xml
@@ -0,0 +1,153 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ubl:Invoice xmlns:ubl="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2"
+             xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2"
+             xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2">
+    <cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</cbc:CustomizationID>
+    <cbc:ProfileID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</cbc:ProfileID>
+    <cbc:ID>RR123456</cbc:ID>
+    <cbc:IssueDate>2016-06-24</cbc:IssueDate>
+    <cbc:InvoiceTypeCode>380</cbc:InvoiceTypeCode>
+    <cbc:Note>#ADU#Bei Zahlung bitte unbedingt angeben: […]</cbc:Note>
+    <cbc:Note>#ADU#Die Lieferung erfolgte im Monat 06/2016. Die nächsten Ausgaben werden zum jeweiligen Erscheinungstermin ausgeliefert.</cbc:Note>
+    <cbc:Note>#ADU#Informationen zum Bankeinzug, einer Adressänderung und vieles mehr finden Sie auch in unseren FAQ.</cbc:Note>
+    <cbc:DocumentCurrencyCode>EUR</cbc:DocumentCurrencyCode>
+    <cbc:BuyerReference>04011000-12347-94</cbc:BuyerReference>
+    <cac:ContractDocumentReference>
+        <cbc:ID>CR987654</cbc:ID>
+    </cac:ContractDocumentReference>
+    <cac:AccountingSupplierParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">seller@email.de</cbc:EndpointID>
+            <cac:PartyName>
+                <cbc:Name>[Seller trading name]</cbc:Name>
+            </cac:PartyName>
+            <cac:PostalAddress>
+                <cbc:StreetName>[Seller address line 1]</cbc:StreetName>
+                <cbc:CityName>[Seller city]</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyTaxScheme>
+                <cbc:CompanyID>DE123456789</cbc:CompanyID>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:PartyTaxScheme>
+            <cac:PartyTaxScheme>
+                <cbc:CompanyID>123/4567/8901</cbc:CompanyID>
+                <cac:TaxScheme>
+                    <cbc:ID>???</cbc:ID>
+                </cac:TaxScheme>
+            </cac:PartyTaxScheme>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>[Seller name]</cbc:RegistrationName>
+                <cbc:CompanyID>HRB 12345</cbc:CompanyID>
+                <cbc:CompanyLegalForm>Geschäftsführer: […] (Vorsitz), […], Amtsgericht […]</cbc:CompanyLegalForm>
+            </cac:PartyLegalEntity>
+            <cac:Contact>
+                <cbc:Name>Kundenservice</cbc:Name>
+                <cbc:Telephone>012-3456789</cbc:Telephone>
+                <cbc:ElectronicMail>info@service.de</cbc:ElectronicMail>
+            </cac:Contact>
+        </cac:Party>
+    </cac:AccountingSupplierParty>
+    <cac:AccountingCustomerParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">buyer@info.de</cbc:EndpointID>
+            <cac:PartyIdentification>
+                <cbc:ID>BI123456</cbc:ID>
+            </cac:PartyIdentification>
+            <cac:PostalAddress>
+                <cbc:StreetName>[Buyer address line 1]</cbc:StreetName>
+                <cbc:AdditionalStreetName>[Buyer address line 2]</cbc:AdditionalStreetName>
+                <cbc:CityName>[Buyer city]</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:AddressLine>
+                    <cbc:Line>[Buyer address line 3]</cbc:Line>
+                </cac:AddressLine>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>[Buyer name]</cbc:RegistrationName>
+            </cac:PartyLegalEntity>
+            <cac:Contact>
+                <cbc:Name>Pressestelle</cbc:Name>
+            </cac:Contact>
+        </cac:Party>
+    </cac:AccountingCustomerParty>
+    <cac:PaymentMeans>
+        <cbc:PaymentMeansCode>58</cbc:PaymentMeansCode>
+        <cac:PayeeFinancialAccount>
+            <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+            <cbc:ID>DE75512108001245126199</cbc:ID>
+        </cac:PayeeFinancialAccount>
+    </cac:PaymentMeans>
+    <cac:PaymentTerms>
+        <cbc:Note>Fällig sofort, ohne Abzug</cbc:Note>
+    </cac:PaymentTerms>
+    <cac:TaxTotal>
+        <cbc:TaxAmount currencyID="EUR">11.92</cbc:TaxAmount>
+        <cac:TaxSubtotal>
+            <cbc:TaxableAmount currencyID="EUR">170.28</cbc:TaxableAmount>
+            <cbc:TaxAmount currencyID="EUR">11.92</cbc:TaxAmount>
+            <cac:TaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>7</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:TaxCategory>
+        </cac:TaxSubtotal>
+    </cac:TaxTotal>
+    <cac:LegalMonetaryTotal>
+        <cbc:LineExtensionAmount currencyID="EUR">170.28</cbc:LineExtensionAmount>
+        <cbc:TaxExclusiveAmount currencyID="EUR">170.28</cbc:TaxExclusiveAmount>
+        <cbc:TaxInclusiveAmount currencyID="EUR">182.2</cbc:TaxInclusiveAmount>
+        <cbc:PayableAmount currencyID="EUR">182.2</cbc:PayableAmount>
+    </cac:LegalMonetaryTotal>
+    <cac:InvoiceLine>
+        <cbc:ID>558490000</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">1</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">152.34</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Description>Heft 13 2016 bis 24 2016</cbc:Description>
+            <cbc:Name>Deutsches Verwaltungsblatt</cbc:Name>
+            <cac:SellersItemIdentification>
+                <cbc:ID>55849000</cbc:ID>
+            </cac:SellersItemIdentification>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>7</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">152.34</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+    <cac:InvoiceLine>
+        <cbc:ID>Versandkosten</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">1</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">17.94</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Description>Abonnement-Nummer […]</cbc:Description>
+            <cbc:Name>Versandkosten</cbc:Name>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>7</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">17.94</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+</ubl:Invoice>
--- a/tests/inputs/ubl/01.04_comprehensive_test_ubl.xml
+++ b/tests/inputs/ubl/01.04_comprehensive_test_ubl.xml
--- a/tests/inputs/ubl/01.04a-INVOICE_ubl.xml
+++ b/tests/inputs/ubl/01.04a-INVOICE_ubl.xml
@@ -0,0 +1,115 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ubl:Invoice xmlns:ubl="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2"
+             xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2"
+             xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2">
+    <cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</cbc:CustomizationID>
+    <cbc:ProfileID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</cbc:ProfileID>
+    <cbc:ID>1234/78/901</cbc:ID>
+    <cbc:IssueDate>2016-06-16</cbc:IssueDate>
+    <cbc:InvoiceTypeCode>380</cbc:InvoiceTypeCode>
+    <cbc:Note>#ADU#Diese Leistung ist umsatzsteuerbefreit nach § 4 Nr. 22a UStG.</cbc:Note>
+    <cbc:DocumentCurrencyCode>EUR</cbc:DocumentCurrencyCode>
+    <cbc:BuyerReference>04011000-12348-91</cbc:BuyerReference>
+    <cac:AccountingSupplierParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">seller@email.de</cbc:EndpointID>
+            <cac:PartyName>
+                <cbc:Name>[Seller trading name]</cbc:Name>
+            </cac:PartyName>
+            <cac:PostalAddress>
+                <cbc:StreetName>[Seller address line 1]</cbc:StreetName>
+                <cbc:AdditionalStreetName>[Seller address line 2]</cbc:AdditionalStreetName>
+                <cbc:CityName>[Seller city]</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyTaxScheme>
+                <cbc:CompanyID>12/345/67890</cbc:CompanyID>
+                <cac:TaxScheme>
+                    <cbc:ID>???</cbc:ID>
+                </cac:TaxScheme>
+            </cac:PartyTaxScheme>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>[Seller name]</cbc:RegistrationName>
+                <cbc:CompanyID>VR 12345 Nz</cbc:CompanyID>
+                <cbc:CompanyLegalForm>Vorstand: [...] (Vorsitzender), […] (Stellvertreterin), Dr. […] (Schatzmeister); Beirat: […] (Vorsitzender); Geschäftsführung: […], AG […], FA für Körperschaften […]</cbc:CompanyLegalForm>
+            </cac:PartyLegalEntity>
+            <cac:Contact>
+                <cbc:Name>[…]</cbc:Name>
+                <cbc:Telephone>+49 (0)12-345678-90</cbc:Telephone>
+                <cbc:ElectronicMail>mail@seller.eu</cbc:ElectronicMail>
+            </cac:Contact>
+        </cac:Party>
+    </cac:AccountingSupplierParty>
+    <cac:AccountingCustomerParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">buyer@info.de</cbc:EndpointID>
+            <cac:PostalAddress>
+                <cbc:StreetName>[Buyer address line 1]</cbc:StreetName>
+                <cbc:AdditionalStreetName>[Buyer address line 2]</cbc:AdditionalStreetName>
+                <cbc:CityName>[Buyer city]</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>[Buyer name]</cbc:RegistrationName>
+            </cac:PartyLegalEntity>
+            <cac:Contact>
+                <cbc:Name>[Buyer contact person]</cbc:Name>
+            </cac:Contact>
+        </cac:Party>
+    </cac:AccountingCustomerParty>
+    <cac:PaymentMeans>
+        <cbc:PaymentMeansCode>58</cbc:PaymentMeansCode>
+        <cac:PayeeFinancialAccount>
+            <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+            <cbc:ID>DE75512108001245126199</cbc:ID>
+        </cac:PayeeFinancialAccount>
+    </cac:PaymentMeans>
+    <cac:PaymentTerms>
+        <cbc:Note>Wir möchten Sie bitten, die Teilnahmegebühr iHv. 120,00 € innerhalb von 14 Tagen auf das oben genannte Konto unter Angabe der Rechnungsnummer 1234/78/901 zu überweisen.</cbc:Note>
+    </cac:PaymentTerms>
+    <cac:TaxTotal>
+        <cbc:TaxAmount currencyID="EUR">0</cbc:TaxAmount>
+        <cac:TaxSubtotal>
+            <cbc:TaxableAmount currencyID="EUR">120</cbc:TaxableAmount>
+            <cbc:TaxAmount currencyID="EUR">0</cbc:TaxAmount>
+            <cac:TaxCategory>
+                <cbc:ID>O</cbc:ID>
+                <cbc:Percent>0</cbc:Percent>
+                <cbc:TaxExemptionReason>als gemeinnützig anerkannt</cbc:TaxExemptionReason>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:TaxCategory>
+        </cac:TaxSubtotal>
+    </cac:TaxTotal>
+    <cac:LegalMonetaryTotal>
+        <cbc:LineExtensionAmount currencyID="EUR">120</cbc:LineExtensionAmount>
+        <cbc:TaxExclusiveAmount currencyID="EUR">120</cbc:TaxExclusiveAmount>
+        <cbc:TaxInclusiveAmount currencyID="EUR">120</cbc:TaxInclusiveAmount>
+        <cbc:PayableAmount currencyID="EUR">120</cbc:PayableAmount>
+    </cac:LegalMonetaryTotal>
+    <cac:InvoiceLine>
+        <cbc:ID>Teilnahmegebühr</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">1</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">120</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Description>Anmeldung von […]</cbc:Description>
+            <cbc:Name>Teilnahmegebühr</cbc:Name>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>O</cbc:ID>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">120</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+</ubl:Invoice>
--- a/tests/inputs/ubl/01.05_minimal_test_ubl.xml
+++ b/tests/inputs/ubl/01.05_minimal_test_ubl.xml
@@ -0,0 +1,93 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Invoice xmlns="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2" xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2" xmlns:cec="urn:oasis:names:specification:ubl:schema:xsd:CommonExtensionComponents-2" xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2">
+  <cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</cbc:CustomizationID>
+  <cbc:ProfileID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</cbc:ProfileID>
+  <cbc:ID>1234567</cbc:ID>
+  <cbc:IssueDate>2018-04-13</cbc:IssueDate>
+  <cbc:DueDate>2018-04-13</cbc:DueDate>
+  <cbc:InvoiceTypeCode>380</cbc:InvoiceTypeCode>
+  <cbc:DocumentCurrencyCode>EUR</cbc:DocumentCurrencyCode>
+  <cbc:BuyerReference>90000000-03083-72</cbc:BuyerReference>
+  <cac:AccountingSupplierParty>
+    <cac:Party>
+      <cbc:EndpointID schemeID="EM">rechnungsausgang@test.com</cbc:EndpointID>
+      <cac:PartyIdentification>
+        <cbc:ID>9876543217894897438</cbc:ID>
+      </cac:PartyIdentification>
+      <cac:PostalAddress>
+        <cbc:CityName>[Seller city]</cbc:CityName>
+        <cbc:PostalZone>12345</cbc:PostalZone>
+        <cac:Country>
+          <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+        </cac:Country>
+      </cac:PostalAddress>
+      <cac:PartyLegalEntity>
+        <cbc:RegistrationName>[Seller name]</cbc:RegistrationName>
+      </cac:PartyLegalEntity>
+      <cac:Contact>
+        <cbc:Name>Tim Tester</cbc:Name>
+        <cbc:Telephone>012 3456789</cbc:Telephone>
+        <cbc:ElectronicMail>tim.tester@test.com</cbc:ElectronicMail>
+      </cac:Contact>
+    </cac:Party>
+  </cac:AccountingSupplierParty>
+  <cac:AccountingCustomerParty>
+    <cac:Party>
+      <cbc:EndpointID schemeID="EM">rechnungseingang@test.de</cbc:EndpointID>
+      <cac:PostalAddress>
+        <cbc:CityName>[Buyer city]</cbc:CityName>
+        <cbc:PostalZone>98765</cbc:PostalZone>
+        <cac:Country>
+          <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+        </cac:Country>
+      </cac:PostalAddress>
+      <cac:PartyLegalEntity>
+        <cbc:RegistrationName>[Buyer name]</cbc:RegistrationName>
+      </cac:PartyLegalEntity>
+    </cac:Party>
+  </cac:AccountingCustomerParty>
+  <cac:PaymentMeans>
+    <cbc:PaymentMeansCode>58</cbc:PaymentMeansCode>
+    <cac:PayeeFinancialAccount>
+      <cbc:ID>DE75512108001245126199</cbc:ID>
+    </cac:PayeeFinancialAccount>
+  </cac:PaymentMeans>
+  <cac:TaxTotal>
+    <cbc:TaxAmount currencyID="EUR">0</cbc:TaxAmount>
+    <cac:TaxSubtotal>
+      <cbc:TaxableAmount currencyID="EUR">4743.75</cbc:TaxableAmount>
+      <cbc:TaxAmount currencyID="EUR">0</cbc:TaxAmount>
+      <cac:TaxCategory>
+        <cbc:ID>O</cbc:ID>
+        <cbc:Percent>0</cbc:Percent>
+        <cbc:TaxExemptionReasonCode>VATEX-EU-O</cbc:TaxExemptionReasonCode>
+        <cac:TaxScheme>
+          <cbc:ID>VAT</cbc:ID>
+        </cac:TaxScheme>
+      </cac:TaxCategory>
+    </cac:TaxSubtotal>
+  </cac:TaxTotal>
+  <cac:LegalMonetaryTotal>
+    <cbc:LineExtensionAmount currencyID="EUR">4743.75</cbc:LineExtensionAmount>
+    <cbc:TaxExclusiveAmount currencyID="EUR">4743.75</cbc:TaxExclusiveAmount>
+    <cbc:TaxInclusiveAmount currencyID="EUR">4743.75</cbc:TaxInclusiveAmount>
+    <cbc:PayableAmount currencyID="EUR">4743.75</cbc:PayableAmount>
+  </cac:LegalMonetaryTotal>
+  <cac:InvoiceLine>
+    <cbc:ID>1</cbc:ID>
+    <cbc:InvoicedQuantity unitCode="XPP">30</cbc:InvoicedQuantity>
+    <cbc:LineExtensionAmount currencyID="EUR">4743.75</cbc:LineExtensionAmount>
+    <cac:Item>
+      <cbc:Name>Beratung</cbc:Name>
+      <cac:ClassifiedTaxCategory>
+        <cbc:ID>O</cbc:ID>
+        <cac:TaxScheme>
+          <cbc:ID>VAT</cbc:ID>
+        </cac:TaxScheme>
+      </cac:ClassifiedTaxCategory>
+    </cac:Item>
+    <cac:Price>
+      <cbc:PriceAmount currencyID="EUR">158.125</cbc:PriceAmount>
+    </cac:Price>
+  </cac:InvoiceLine>
+</Invoice>
--- a/tests/inputs/ubl/01.05a-INVOICE_ubl.xml
+++ b/tests/inputs/ubl/01.05a-INVOICE_ubl.xml
@@ -0,0 +1,192 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ubl:Invoice xmlns:ubl="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2"
+             xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2"
+             xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2">
+    <cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</cbc:CustomizationID>
+    <cbc:ProfileID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</cbc:ProfileID>
+    <cbc:ID>PRG1502112</cbc:ID>
+    <cbc:IssueDate>2015-04-24</cbc:IssueDate>
+    <cbc:InvoiceTypeCode>380</cbc:InvoiceTypeCode>
+    <cbc:Note>#ADU#Trainer: Herr […]</cbc:Note>
+    <cbc:DocumentCurrencyCode>EUR</cbc:DocumentCurrencyCode>
+    <cbc:BuyerReference>99000000-18188-18</cbc:BuyerReference>
+    <cac:InvoicePeriod>
+        <cbc:StartDate>2015-04-20</cbc:StartDate>
+        <cbc:EndDate>2015-04-24</cbc:EndDate>
+    </cac:InvoicePeriod>
+    <cac:ProjectReference>
+        <cbc:ID>PR456789</cbc:ID>
+    </cac:ProjectReference>
+    <cac:AccountingSupplierParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">seller@email.de</cbc:EndpointID>
+            <cac:PostalAddress>
+                <cbc:StreetName>[Seller address line 1]</cbc:StreetName>
+                <cbc:CityName>[Seller city]</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyTaxScheme>
+                <cbc:CompanyID>DE123456789</cbc:CompanyID>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:PartyTaxScheme>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>[Seller name]</cbc:RegistrationName>
+                <cbc:CompanyID>HRB 123456</cbc:CompanyID>
+                <cbc:CompanyLegalForm>Sitz der Gesellschaft […], Registergericht […], Amtsgericht […]</cbc:CompanyLegalForm>
+            </cac:PartyLegalEntity>
+            <cac:Contact>
+                <cbc:Name>[Seller contact person]</cbc:Name>
+                <cbc:Telephone>+49 123456789</cbc:Telephone>
+                <cbc:ElectronicMail>xxx@schulung.de</cbc:ElectronicMail>
+            </cac:Contact>
+        </cac:Party>
+    </cac:AccountingSupplierParty>
+    <cac:AccountingCustomerParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">buyer@info.de</cbc:EndpointID>
+            <cac:PartyIdentification>
+                <cbc:ID>BI123456</cbc:ID>
+            </cac:PartyIdentification>
+            <cac:PostalAddress>
+                <cbc:StreetName>[Buyer address line 1]</cbc:StreetName>
+                <cbc:CityName>[Buyer city]</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>[Buyer name]</cbc:RegistrationName>
+            </cac:PartyLegalEntity>
+        </cac:Party>
+    </cac:AccountingCustomerParty>
+    <cac:Delivery>
+        <cac:DeliveryLocation>
+            <cac:Address>
+                <cbc:CityName>Schulungsort</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:Address>
+        </cac:DeliveryLocation>
+        <cac:DeliveryParty>
+            <cac:PartyName>
+                <cbc:Name>Schulungsanbieter</cbc:Name>
+            </cac:PartyName>
+        </cac:DeliveryParty>
+    </cac:Delivery>
+    <cac:PaymentMeans>
+        <cbc:PaymentMeansCode>58</cbc:PaymentMeansCode>
+        <cac:PayeeFinancialAccount>
+            <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+            <cbc:ID>DE75512108001245126199</cbc:ID>
+        </cac:PayeeFinancialAccount>
+    </cac:PaymentMeans>
+    <cac:PaymentMeans>
+        <cbc:PaymentMeansCode>58</cbc:PaymentMeansCode>
+        <cac:PayeeFinancialAccount>
+            <cbc:ID>DE12500105170648489890</cbc:ID>
+        </cac:PayeeFinancialAccount>
+    </cac:PaymentMeans>
+    <cac:PaymentTerms>
+        <cbc:Note>14 Tage</cbc:Note>
+    </cac:PaymentTerms>
+    <cac:TaxTotal>
+        <cbc:TaxAmount currencyID="EUR">1685.3</cbc:TaxAmount>
+        <cac:TaxSubtotal>
+            <cbc:TaxableAmount currencyID="EUR">8870</cbc:TaxableAmount>
+            <cbc:TaxAmount currencyID="EUR">1685.3</cbc:TaxAmount>
+            <cac:TaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:TaxCategory>
+        </cac:TaxSubtotal>
+    </cac:TaxTotal>
+    <cac:LegalMonetaryTotal>
+        <cbc:LineExtensionAmount currencyID="EUR">8870</cbc:LineExtensionAmount>
+        <cbc:TaxExclusiveAmount currencyID="EUR">8870</cbc:TaxExclusiveAmount>
+        <cbc:TaxInclusiveAmount currencyID="EUR">10555.3</cbc:TaxInclusiveAmount>
+        <cbc:PayableAmount currencyID="EUR">10555.3</cbc:PayableAmount>
+    </cac:LegalMonetaryTotal>
+    <cac:InvoiceLine>
+        <cbc:ID>Seminar: […]</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="DAY">5</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">6700</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Seminar</cbc:Name>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">1340</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+    <cac:InvoiceLine>
+        <cbc:ID>Raumkosten Schulungsort</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="DAY">5</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">1500</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Raumkosten</cbc:Name>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">300</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+    <cac:InvoiceLine>
+        <cbc:ID>Reisekostenpauschale</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">5</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">450</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Reisekostenpauschale</cbc:Name>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">90</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+    <cac:InvoiceLine>
+        <cbc:ID>Seminarunterlagen</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">11</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">220</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Seminarunterlagen</cbc:Name>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">20</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+</ubl:Invoice>
--- a/tests/inputs/ubl/01.06_minimal_test_ubl.xml
+++ b/tests/inputs/ubl/01.06_minimal_test_ubl.xml
@@ -0,0 +1,99 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Invoice xmlns="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2" xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2" xmlns:cec="urn:oasis:names:specification:ubl:schema:xsd:CommonExtensionComponents-2" xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2">
+  <cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</cbc:CustomizationID>
+  <cbc:ProfileID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</cbc:ProfileID>
+  <cbc:ID>1234567</cbc:ID>
+  <cbc:IssueDate>2018-04-13</cbc:IssueDate>
+  <cbc:DueDate>2018-04-13</cbc:DueDate>
+  <cbc:InvoiceTypeCode>380</cbc:InvoiceTypeCode>
+  <cbc:DocumentCurrencyCode>EUR</cbc:DocumentCurrencyCode>
+  <cbc:BuyerReference>90000000-03083-72</cbc:BuyerReference>
+  <cac:AccountingSupplierParty>
+    <cac:Party>
+      <cbc:EndpointID schemeID="EM">rechnungsausgang@test.com</cbc:EndpointID>
+      <cac:PartyIdentification>
+        <cbc:ID>9876543217894897438</cbc:ID>
+      </cac:PartyIdentification>
+      <cac:PostalAddress>
+        <cbc:CityName>[Seller city]</cbc:CityName>
+        <cbc:PostalZone>12345</cbc:PostalZone>
+        <cac:Country>
+          <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+        </cac:Country>
+      </cac:PostalAddress>
+      <cac:PartyTaxScheme>
+        <cbc:CompanyID>ATU123456789</cbc:CompanyID>
+        <cac:TaxScheme>
+          <cbc:ID>VAT</cbc:ID>
+        </cac:TaxScheme>
+      </cac:PartyTaxScheme>
+      <cac:PartyLegalEntity>
+        <cbc:RegistrationName>[Seller name]</cbc:RegistrationName>
+      </cac:PartyLegalEntity>
+      <cac:Contact>
+        <cbc:Name>Tim Tester</cbc:Name>
+        <cbc:Telephone>012 3456789</cbc:Telephone>
+        <cbc:ElectronicMail>tim.tester@test.com</cbc:ElectronicMail>
+      </cac:Contact>
+    </cac:Party>
+  </cac:AccountingSupplierParty>
+  <cac:AccountingCustomerParty>
+    <cac:Party>
+      <cbc:EndpointID schemeID="EM">rechnungseingang@test.de</cbc:EndpointID>
+      <cac:PostalAddress>
+        <cbc:CityName>[Buyer city]</cbc:CityName>
+        <cbc:PostalZone>98765</cbc:PostalZone>
+        <cac:Country>
+          <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+        </cac:Country>
+      </cac:PostalAddress>
+      <cac:PartyLegalEntity>
+        <cbc:RegistrationName>[Buyer name]</cbc:RegistrationName>
+      </cac:PartyLegalEntity>
+    </cac:Party>
+  </cac:AccountingCustomerParty>
+  <cac:PaymentMeans>
+    <cbc:PaymentMeansCode>58</cbc:PaymentMeansCode>
+    <cac:PayeeFinancialAccount>
+      <cbc:ID>DE75512108001245126199</cbc:ID>
+    </cac:PayeeFinancialAccount>
+  </cac:PaymentMeans>
+  <cac:TaxTotal>
+    <cbc:TaxAmount currencyID="EUR">757.41</cbc:TaxAmount>
+    <cac:TaxSubtotal>
+      <cbc:TaxableAmount currencyID="EUR">3986.34</cbc:TaxableAmount>
+      <cbc:TaxAmount currencyID="EUR">757.41</cbc:TaxAmount>
+      <cac:TaxCategory>
+        <cbc:ID>S</cbc:ID>
+        <cbc:Percent>19</cbc:Percent>
+        <cac:TaxScheme>
+          <cbc:ID>VAT</cbc:ID>
+        </cac:TaxScheme>
+      </cac:TaxCategory>
+    </cac:TaxSubtotal>
+  </cac:TaxTotal>
+  <cac:LegalMonetaryTotal>
+    <cbc:LineExtensionAmount currencyID="EUR">3986.34</cbc:LineExtensionAmount>
+    <cbc:TaxExclusiveAmount currencyID="EUR">3986.34</cbc:TaxExclusiveAmount>
+    <cbc:TaxInclusiveAmount currencyID="EUR">4743.75</cbc:TaxInclusiveAmount>
+    <cbc:PayableAmount currencyID="EUR">4743.75</cbc:PayableAmount>
+  </cac:LegalMonetaryTotal>
+  <cac:InvoiceLine>
+    <cbc:ID>1</cbc:ID>
+    <cbc:InvoicedQuantity unitCode="XPP">30</cbc:InvoicedQuantity>
+    <cbc:LineExtensionAmount currencyID="EUR">3986.34</cbc:LineExtensionAmount>
+    <cac:Item>
+      <cbc:Name>Beratung</cbc:Name>
+      <cac:ClassifiedTaxCategory>
+        <cbc:ID>S</cbc:ID>
+        <cbc:Percent>19</cbc:Percent>
+        <cac:TaxScheme>
+          <cbc:ID>VAT</cbc:ID>
+        </cac:TaxScheme>
+      </cac:ClassifiedTaxCategory>
+    </cac:Item>
+    <cac:Price>
+      <cbc:PriceAmount currencyID="EUR">132.878</cbc:PriceAmount>
+    </cac:Price>
+  </cac:InvoiceLine>
+</Invoice>
--- a/tests/inputs/ubl/01.06a-INVOICE_ubl.xml
+++ b/tests/inputs/ubl/01.06a-INVOICE_ubl.xml
@@ -0,0 +1,244 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ubl:Invoice xmlns:ubl="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2"
+             xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2"
+             xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2">
+    <cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</cbc:CustomizationID>
+    <cbc:ProfileID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</cbc:ProfileID>
+    <cbc:ID>R123456789</cbc:ID>
+    <cbc:IssueDate>2016-07-06</cbc:IssueDate>
+    <cbc:InvoiceTypeCode>380</cbc:InvoiceTypeCode>
+    <cbc:Note>#ADU#Die auf Transaktionsebene ausgewiesenen Händlerentgelte und Interchangewerte werden im Rahmen der Abrechnung addiert und kaufmännisch auf ganze Währungseinheiten gerundet.</cbc:Note>
+    <cbc:DocumentCurrencyCode>EUR</cbc:DocumentCurrencyCode>
+    <cbc:BuyerReference>99000000-01944-98</cbc:BuyerReference>
+    <cac:InvoicePeriod>
+        <cbc:StartDate>2016-06-01</cbc:StartDate>
+        <cbc:EndDate>2016-06-30</cbc:EndDate>
+    </cac:InvoicePeriod>
+    <cac:ContractDocumentReference>
+        <cbc:ID>CR987654321</cbc:ID>
+    </cac:ContractDocumentReference>
+    <cac:AccountingSupplierParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">seller@email.de</cbc:EndpointID>
+            <cac:PostalAddress>
+                <cbc:StreetName>[Seller address line 1]</cbc:StreetName>
+                <cbc:CityName>[Seller city]</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyTaxScheme>
+                <cbc:CompanyID>DE123456789</cbc:CompanyID>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:PartyTaxScheme>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>[Seller name]</cbc:RegistrationName>
+                <cbc:CompanyID>HRB 123456</cbc:CompanyID>
+                <cbc:CompanyLegalForm>Amtsgericht […]</cbc:CompanyLegalForm>
+            </cac:PartyLegalEntity>
+            <cac:Contact>
+                <cbc:Name>Kundenservice - Vertriebspartner Direktkunden</cbc:Name>
+                <cbc:Telephone>+49(0)12 3456-7890</cbc:Telephone>
+                <cbc:ElectronicMail>kundenservice@email.de</cbc:ElectronicMail>
+            </cac:Contact>
+        </cac:Party>
+    </cac:AccountingSupplierParty>
+    <cac:AccountingCustomerParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">buyer@info.de</cbc:EndpointID>
+            <cac:PartyIdentification>
+                <cbc:ID>B123456789</cbc:ID>
+            </cac:PartyIdentification>
+            <cac:PostalAddress>
+                <cbc:StreetName>[Buyer address line 1]</cbc:StreetName>
+                <cbc:CityName>[Buyer city]</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>[Buyer name]</cbc:RegistrationName>
+            </cac:PartyLegalEntity>
+            <cac:Contact>
+                <cbc:Name>Abteilung Buchhaltung</cbc:Name>
+            </cac:Contact>
+        </cac:Party>
+    </cac:AccountingCustomerParty>
+    <cac:Delivery>
+        <cac:DeliveryLocation>
+            <cac:Address>
+                <cbc:StreetName>[Deliver to address line 1]</cbc:StreetName>
+                <cbc:CityName>[Deliver to city]</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:Address>
+        </cac:DeliveryLocation>
+        <cac:DeliveryParty>
+            <cac:PartyName>
+                <cbc:Name>Leistungsempfänger</cbc:Name>
+            </cac:PartyName>
+        </cac:DeliveryParty>
+    </cac:Delivery>
+    <cac:PaymentMeans>
+        <cbc:PaymentMeansCode>58</cbc:PaymentMeansCode>
+        <cac:PayeeFinancialAccount>
+            <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+            <cbc:ID>DE12500105170648489890</cbc:ID>
+        </cac:PayeeFinancialAccount>
+    </cac:PaymentMeans>
+    <cac:PaymentTerms>
+        <cbc:Note>Bitte überweisen Sie den Gesamtbetrag in Höhe von EUR […] innerhalb von […] Tagen ohne Abzug auf unser Konto IBAN […] bei […] BIC […].</cbc:Note>
+    </cac:PaymentTerms>
+    <cac:TaxTotal>
+        <cbc:TaxAmount currencyID="EUR">3464.98</cbc:TaxAmount>
+        <cac:TaxSubtotal>
+            <cbc:TaxableAmount currencyID="EUR">18236.72</cbc:TaxableAmount>
+            <cbc:TaxAmount currencyID="EUR">3464.98</cbc:TaxAmount>
+            <cac:TaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:TaxCategory>
+        </cac:TaxSubtotal>
+    </cac:TaxTotal>
+    <cac:LegalMonetaryTotal>
+        <cbc:LineExtensionAmount currencyID="EUR">18236.72</cbc:LineExtensionAmount>
+        <cbc:TaxExclusiveAmount currencyID="EUR">18236.72</cbc:TaxExclusiveAmount>
+        <cbc:TaxInclusiveAmount currencyID="EUR">21701.7</cbc:TaxInclusiveAmount>
+        <cbc:PayableAmount currencyID="EUR">21701.7</cbc:PayableAmount>
+    </cac:LegalMonetaryTotal>
+    <cac:InvoiceLine>
+        <cbc:ID>8000593202</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="MON">1</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">17.24</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Servicegebühren A</cbc:Name>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">17.24</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+    <cac:InvoiceLine>
+        <cbc:ID>8000612340</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="MON">1</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">16704.07</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Servicegebühren B</cbc:Name>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">16704.07</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+    <cac:InvoiceLine>
+        <cbc:ID>8000619834</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="MON">1</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">5.21</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Servicegebühren C</cbc:Name>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">5.21</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+    <cac:InvoiceLine>
+        <cbc:ID>8000619863</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="MON">1</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">282.36</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Servicegebühren D</cbc:Name>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">282.36</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+    <cac:InvoiceLine>
+        <cbc:ID>8000613563</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="MON">1</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">386.68</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Servicegebühren E</cbc:Name>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">386.68</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+    <cac:InvoiceLine>
+        <cbc:ID>8000648582</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="MON">1</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">535.11</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Servicegebühren F</cbc:Name>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">535.11</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+    <cac:InvoiceLine>
+        <cbc:ID>8000648584</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="MON">1</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">306.05</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Servicegebühren G</cbc:Name>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">306.05</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+</ubl:Invoice>
--- a/tests/inputs/ubl/01.07a-INVOICE_ubl.xml
+++ b/tests/inputs/ubl/01.07a-INVOICE_ubl.xml
@@ -0,0 +1,126 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ubl:Invoice xmlns:ubl="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2"
+             xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2"
+             xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2">
+    <cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</cbc:CustomizationID>
+    <cbc:ProfileID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</cbc:ProfileID>
+    <cbc:ID>R1234567</cbc:ID>
+    <cbc:IssueDate>2016-06-30</cbc:IssueDate>
+    <cbc:DueDate>2016-08-14</cbc:DueDate>
+    <cbc:InvoiceTypeCode>380</cbc:InvoiceTypeCode>
+    <cbc:Note>#ADU#Bitte überweisen Sie den Gesamtbetrag in Höhe von EUR 45,22 auf unser Konto Nr. […], BIC […].</cbc:Note>
+    <cbc:Note>#ADU#Bei Fragen steht Ihnen unsere Kundenbetreuung gern unter der Rufnummer [...] zur Verfügung. Beanstandungen am Inhalt dieser Rechnung sind uns innerhalb von 28 Tagen nach Erhalt der Rechnung schriftlich mitzuteilen. Nach Ablauf dieser Frist gilt der Saldo endgültig.</cbc:Note>
+    <cbc:Note>#ADU#Die Deutsche Kreditwirtschaft hat die Händlerbedingungen für die Teilnahme am electronic cash-System angepasst. Sie finden diese unter https://www…./de/agb. Die neuen Händlerbedingungen gelten ab sofort, wobei Sie binnen sechs Wochen nach Bekanntgabe der Änderung einen Widerspruch an Ihre Hausbank richten können. Bitte klären Sie sämtliche Fragen diese Bedingungen betreffend mit Ihrer Hausbank.</cbc:Note>
+    <cbc:DocumentCurrencyCode>EUR</cbc:DocumentCurrencyCode>
+    <cbc:BuyerReference>99000000-05676-98</cbc:BuyerReference>
+    <cac:InvoicePeriod>
+        <cbc:StartDate>2016-06-01</cbc:StartDate>
+        <cbc:EndDate>2016-06-30</cbc:EndDate>
+    </cac:InvoicePeriod>
+    <cac:AccountingSupplierParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">seller@email.de</cbc:EndpointID>
+            <cac:PostalAddress>
+                <cbc:StreetName>[Seller address line 1]</cbc:StreetName>
+                <cbc:CityName>[Seller city]</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyTaxScheme>
+                <cbc:CompanyID>DE123456789</cbc:CompanyID>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:PartyTaxScheme>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>[Seller name]</cbc:RegistrationName>
+            </cac:PartyLegalEntity>
+            <cac:Contact>
+                <cbc:Name>[Seller contact person]</cbc:Name>
+                <cbc:Telephone>+49 (0)69…</cbc:Telephone>
+                <cbc:ElectronicMail>seller@info.de</cbc:ElectronicMail>
+            </cac:Contact>
+        </cac:Party>
+    </cac:AccountingSupplierParty>
+    <cac:AccountingCustomerParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">buyer@info.de</cbc:EndpointID>
+            <cac:PartyIdentification>
+                <cbc:ID>B123456789</cbc:ID>
+            </cac:PartyIdentification>
+            <cac:PostalAddress>
+                <cbc:StreetName>[Buyer address line 1]</cbc:StreetName>
+                <cbc:CityName>[Buyer city]</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyTaxScheme>
+                <cbc:CompanyID>DE123456789</cbc:CompanyID>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:PartyTaxScheme>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>[Buyer name]</cbc:RegistrationName>
+            </cac:PartyLegalEntity>
+            <cac:Contact>
+                <cbc:Name>[Buyer contact person]</cbc:Name>
+            </cac:Contact>
+        </cac:Party>
+    </cac:AccountingCustomerParty>
+    <cac:PaymentMeans>
+        <cbc:PaymentMeansCode>58</cbc:PaymentMeansCode>
+        <cac:PayeeFinancialAccount>
+            <cbc:ID>DE12500105170648489890</cbc:ID>
+        </cac:PayeeFinancialAccount>
+    </cac:PaymentMeans>
+    <cac:PaymentTerms>
+        <cbc:Note>Bis zum 14.08.2016 ohne Abzug</cbc:Note>
+    </cac:PaymentTerms>
+    <cac:TaxTotal>
+        <cbc:TaxAmount currencyID="EUR">7.22</cbc:TaxAmount>
+        <cac:TaxSubtotal>
+            <cbc:TaxableAmount currencyID="EUR">38</cbc:TaxableAmount>
+            <cbc:TaxAmount currencyID="EUR">7.22</cbc:TaxAmount>
+            <cac:TaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:TaxCategory>
+        </cac:TaxSubtotal>
+    </cac:TaxTotal>
+    <cac:LegalMonetaryTotal>
+        <cbc:LineExtensionAmount currencyID="EUR">38</cbc:LineExtensionAmount>
+        <cbc:TaxExclusiveAmount currencyID="EUR">38</cbc:TaxExclusiveAmount>
+        <cbc:TaxInclusiveAmount currencyID="EUR">45.22</cbc:TaxInclusiveAmount>
+        <cbc:PayableAmount currencyID="EUR">45.22</cbc:PayableAmount>
+    </cac:LegalMonetaryTotal>
+    <cac:InvoiceLine>
+        <cbc:ID>000040</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="MON">1</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">38</cbc:LineExtensionAmount>
+        <cac:InvoicePeriod>
+            <cbc:StartDate>2016-06-01</cbc:StartDate>
+            <cbc:EndDate>2016-06-30</cbc:EndDate>
+        </cac:InvoicePeriod>
+        <cac:Item>
+            <cbc:Name>Miete X</cbc:Name>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">38</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+</ubl:Invoice>
--- a/tests/inputs/ubl/01.08a-INVOICE_ubl.xml
+++ b/tests/inputs/ubl/01.08a-INVOICE_ubl.xml
@@ -0,0 +1,133 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ubl:Invoice xmlns:ubl="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2"
+             xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2"
+             xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2">
+    <cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</cbc:CustomizationID>
+    <cbc:ProfileID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</cbc:ProfileID>
+    <cbc:ID>R123456789</cbc:ID>
+    <cbc:IssueDate>2016-01-18</cbc:IssueDate>
+    <cbc:DueDate>2016-02-01</cbc:DueDate>
+    <cbc:InvoiceTypeCode>380</cbc:InvoiceTypeCode>
+    <cbc:DocumentCurrencyCode>EUR</cbc:DocumentCurrencyCode>
+    <cbc:BuyerReference>04011000-12349-88</cbc:BuyerReference>
+    <cac:OrderReference>
+        <cbc:ID>Dummywert</cbc:ID>
+        <cbc:SalesOrderID>A123456789</cbc:SalesOrderID>
+    </cac:OrderReference>
+    <cac:ContractDocumentReference>
+        <cbc:ID>V876543210</cbc:ID>
+    </cac:ContractDocumentReference>
+    <cac:AccountingSupplierParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">seller@email.de</cbc:EndpointID>
+            <cac:PartyName>
+                <cbc:Name>[Seller trading name]</cbc:Name>
+            </cac:PartyName>
+            <cac:PostalAddress>
+                <cbc:StreetName>Postfach 123456</cbc:StreetName>
+                <cbc:CityName>[Seller city]</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyTaxScheme>
+                <cbc:CompanyID>DE123456789</cbc:CompanyID>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:PartyTaxScheme>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>[Seller name]</cbc:RegistrationName>
+                <cbc:CompanyID>HRB 123</cbc:CompanyID>
+                <cbc:CompanyLegalForm>Amtsgericht […], Geschäftsführer: […], Sitz der Gesellschaft […], Aufsichtsratvorsitzender: […]</cbc:CompanyLegalForm>
+            </cac:PartyLegalEntity>
+            <cac:Contact>
+                <cbc:Name>Auskunft erteilt Ihnen</cbc:Name>
+                <cbc:Telephone>1234567890</cbc:Telephone>
+                <cbc:ElectronicMail>seller@test.de</cbc:ElectronicMail>
+            </cac:Contact>
+        </cac:Party>
+    </cac:AccountingSupplierParty>
+    <cac:AccountingCustomerParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">buyer@info.de</cbc:EndpointID>
+            <cac:PostalAddress>
+                <cbc:StreetName>[Buyer address line 1]</cbc:StreetName>
+                <cbc:CityName>[Buyer city]</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>[Buyer name]</cbc:RegistrationName>
+            </cac:PartyLegalEntity>
+        </cac:Party>
+    </cac:AccountingCustomerParty>
+    <cac:PaymentMeans>
+        <cbc:PaymentMeansCode>58</cbc:PaymentMeansCode>
+        <cac:PayeeFinancialAccount>
+            <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+            <cbc:ID>DE12500105170648489890</cbc:ID>
+        </cac:PayeeFinancialAccount>
+    </cac:PaymentMeans>
+    <cac:PaymentMeans>
+        <cbc:PaymentMeansCode>58</cbc:PaymentMeansCode>
+        <cac:PayeeFinancialAccount>
+            <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+            <cbc:ID>DE89370400440532013000</cbc:ID>
+        </cac:PayeeFinancialAccount>
+    </cac:PaymentMeans>
+    <cac:PaymentMeans>
+        <cbc:PaymentMeansCode>58</cbc:PaymentMeansCode>
+        <cac:PayeeFinancialAccount>
+            <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+            <cbc:ID>DE75512108001245126199</cbc:ID>
+        </cac:PayeeFinancialAccount>
+    </cac:PaymentMeans>
+    <cac:PaymentTerms>
+        <cbc:Note>Die Zahlung wird als Teilleistung monatl. Erbracht und ist monatl. zum letzten Werktag fällig. …</cbc:Note>
+    </cac:PaymentTerms>
+    <cac:TaxTotal>
+        <cbc:TaxAmount currencyID="EUR">451.19</cbc:TaxAmount>
+        <cac:TaxSubtotal>
+            <cbc:TaxableAmount currencyID="EUR">2374.68</cbc:TaxableAmount>
+            <cbc:TaxAmount currencyID="EUR">451.19</cbc:TaxAmount>
+            <cac:TaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:TaxCategory>
+        </cac:TaxSubtotal>
+    </cac:TaxTotal>
+    <cac:LegalMonetaryTotal>
+        <cbc:LineExtensionAmount currencyID="EUR">2374.68</cbc:LineExtensionAmount>
+        <cbc:TaxExclusiveAmount currencyID="EUR">2374.68</cbc:TaxExclusiveAmount>
+        <cbc:TaxInclusiveAmount currencyID="EUR">2825.87</cbc:TaxInclusiveAmount>
+        <cbc:PayableAmount currencyID="EUR">2825.87</cbc:PayableAmount>
+    </cac:LegalMonetaryTotal>
+    <cac:InvoiceLine>
+        <cbc:ID>0020</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">12</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">2374.68</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Zentrale Administrationslösung Bereitstellung von Werkzeugen zur Administration/Betreuung</cbc:Name>
+            <cac:SellersItemIdentification>
+                <cbc:ID>519304</cbc:ID>
+            </cac:SellersItemIdentification>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">197.89</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+</ubl:Invoice>
--- a/tests/inputs/ubl/01.09a-INVOICE_ubl.xml
+++ b/tests/inputs/ubl/01.09a-INVOICE_ubl.xml
@@ -0,0 +1,130 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ubl:Invoice xmlns:ubl="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2"
+             xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2"
+             xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2">
+    <cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</cbc:CustomizationID>
+    <cbc:ProfileID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</cbc:ProfileID>
+    <cbc:ID>R123456</cbc:ID>
+    <cbc:IssueDate>2016-04-06</cbc:IssueDate>
+    <cbc:DueDate>2016-04-20</cbc:DueDate>
+    <cbc:InvoiceTypeCode>380</cbc:InvoiceTypeCode>
+    <cbc:DocumentCurrencyCode>EUR</cbc:DocumentCurrencyCode>
+    <cbc:BuyerReference>04011000-12350-85</cbc:BuyerReference>
+    <cac:OrderReference>
+        <cbc:ID>Dummywert</cbc:ID>
+        <cbc:SalesOrderID>A123456789</cbc:SalesOrderID>
+    </cac:OrderReference>
+    <cac:OriginatorDocumentReference>
+        <cbc:ID>ANG987654321</cbc:ID>
+    </cac:OriginatorDocumentReference>
+    <cac:AccountingSupplierParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">seller@email.de</cbc:EndpointID>
+            <cac:PartyName>
+                <cbc:Name>[Seller trading name]</cbc:Name>
+            </cac:PartyName>
+            <cac:PostalAddress>
+                <cbc:StreetName>Postfach 123456</cbc:StreetName>
+                <cbc:CityName>[Seller city]</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyTaxScheme>
+                <cbc:CompanyID>DE123456789</cbc:CompanyID>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:PartyTaxScheme>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>[Seller name]</cbc:RegistrationName>
+                <cbc:CompanyID>HRB 123</cbc:CompanyID>
+                <cbc:CompanyLegalForm>Amtsgericht […], Geschäftsführer: […], Sitz der Gesellschaft […], Aufsichtsratvorsitzender: […]</cbc:CompanyLegalForm>
+            </cac:PartyLegalEntity>
+            <cac:Contact>
+                <cbc:Name>Auskunft erteilt Ihnen</cbc:Name>
+                <cbc:Telephone>1234567890</cbc:Telephone>
+                <cbc:ElectronicMail>seller@test.de</cbc:ElectronicMail>
+            </cac:Contact>
+        </cac:Party>
+    </cac:AccountingSupplierParty>
+    <cac:AccountingCustomerParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">buyer@info.de</cbc:EndpointID>
+            <cac:PostalAddress>
+                <cbc:StreetName>[Buyer address line 1]</cbc:StreetName>
+                <cbc:CityName>[Buyer city]</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>[Buyer name]</cbc:RegistrationName>
+            </cac:PartyLegalEntity>
+        </cac:Party>
+    </cac:AccountingCustomerParty>
+    <cac:PaymentMeans>
+        <cbc:PaymentMeansCode>58</cbc:PaymentMeansCode>
+        <cac:PayeeFinancialAccount>
+            <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+            <cbc:ID>DE12500105170648489890</cbc:ID>
+        </cac:PayeeFinancialAccount>
+    </cac:PaymentMeans>
+    <cac:PaymentMeans>
+        <cbc:PaymentMeansCode>58</cbc:PaymentMeansCode>
+        <cac:PayeeFinancialAccount>
+            <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+            <cbc:ID>DE89370400440532013000</cbc:ID>
+        </cac:PayeeFinancialAccount>
+    </cac:PaymentMeans>
+    <cac:PaymentMeans>
+        <cbc:PaymentMeansCode>58</cbc:PaymentMeansCode>
+        <cac:PayeeFinancialAccount>
+            <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+            <cbc:ID>DE75512108001245126199</cbc:ID>
+        </cac:PayeeFinancialAccount>
+    </cac:PaymentMeans>
+    <cac:TaxTotal>
+        <cbc:TaxAmount currencyID="EUR">1149.12</cbc:TaxAmount>
+        <cac:TaxSubtotal>
+            <cbc:TaxableAmount currencyID="EUR">6048</cbc:TaxableAmount>
+            <cbc:TaxAmount currencyID="EUR">1149.12</cbc:TaxAmount>
+            <cac:TaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:TaxCategory>
+        </cac:TaxSubtotal>
+    </cac:TaxTotal>
+    <cac:LegalMonetaryTotal>
+        <cbc:LineExtensionAmount currencyID="EUR">6048</cbc:LineExtensionAmount>
+        <cbc:TaxExclusiveAmount currencyID="EUR">6048</cbc:TaxExclusiveAmount>
+        <cbc:TaxInclusiveAmount currencyID="EUR">7197.12</cbc:TaxInclusiveAmount>
+        <cbc:PayableAmount currencyID="EUR">7197.12</cbc:PayableAmount>
+    </cac:LegalMonetaryTotal>
+    <cac:InvoiceLine>
+        <cbc:ID>0010</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">1</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">6048</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Paketierung der Anwendung "Kofax 10.2" für 180 Geräte</cbc:Name>
+            <cac:SellersItemIdentification>
+                <cbc:ID>519306</cbc:ID>
+            </cac:SellersItemIdentification>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">6048</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+</ubl:Invoice>
--- a/tests/inputs/ubl/01.10a-INVOICE_ubl.xml
+++ b/tests/inputs/ubl/01.10a-INVOICE_ubl.xml
@@ -0,0 +1,152 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ubl:Invoice xmlns:ubl="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2"
+             xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2"
+             xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2">
+    <cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</cbc:CustomizationID>
+    <cbc:ProfileID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</cbc:ProfileID>
+    <cbc:ID>Rechnungsnummer</cbc:ID>
+    <cbc:IssueDate>2016-06-27</cbc:IssueDate>
+    <cbc:InvoiceTypeCode>380</cbc:InvoiceTypeCode>
+    <cbc:Note>#ADU#Wir liefern Ihnen ausschließlich zu unseren allgemeinen Geschäftsbedingungen (Stand Februar 2013). Diese werden Ihnen jederzeit auf Wunsch übersandt. Bei Aufträgen, basierend auf öffentlichen Vergaben, gelten die ggf. vereinbarten abweichenden Liefer- und Zahungsbedingungen des Auftraggebers.</cbc:Note>
+    <cbc:DocumentCurrencyCode>EUR</cbc:DocumentCurrencyCode>
+    <cbc:BuyerReference>04011000-12350-85</cbc:BuyerReference>
+    <cac:OrderReference>
+        <cbc:ID>Dummywert</cbc:ID>
+        <cbc:SalesOrderID>Auftragsnummer</cbc:SalesOrderID>
+    </cac:OrderReference>
+    <cac:AccountingSupplierParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">seller@email.de</cbc:EndpointID>
+            <cac:PartyName>
+                <cbc:Name>[Seller trading name]</cbc:Name>
+            </cac:PartyName>
+            <cac:PostalAddress>
+                <cbc:StreetName>[Seller address line 1]</cbc:StreetName>
+                <cbc:CityName>[Seller city]</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyTaxScheme>
+                <cbc:CompanyID>DE123456789</cbc:CompanyID>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:PartyTaxScheme>
+            <cac:PartyTaxScheme>
+                <cbc:CompanyID>123/456/789</cbc:CompanyID>
+                <cac:TaxScheme>
+                    <cbc:ID>???</cbc:ID>
+                </cac:TaxScheme>
+            </cac:PartyTaxScheme>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>[Seller name]</cbc:RegistrationName>
+                <cbc:CompanyID>HRB 123456</cbc:CompanyID>
+                <cbc:CompanyLegalForm>Sitz der Gesellschaft: […], Registergericht: […], Geschäftsführer: […]</cbc:CompanyLegalForm>
+            </cac:PartyLegalEntity>
+            <cac:Contact>
+                <cbc:Name>Berater / Sachbearbeiter</cbc:Name>
+                <cbc:Telephone>+49(0)1234-0</cbc:Telephone>
+                <cbc:ElectronicMail>info@seller.de</cbc:ElectronicMail>
+            </cac:Contact>
+        </cac:Party>
+    </cac:AccountingSupplierParty>
+    <cac:AccountingCustomerParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">buyer@info.de</cbc:EndpointID>
+            <cac:PostalAddress>
+                <cbc:StreetName>[Buyer address line 1]</cbc:StreetName>
+                <cbc:CityName>[Buyer city]</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>[Buyer name]</cbc:RegistrationName>
+            </cac:PartyLegalEntity>
+            <cac:Contact>
+                <cbc:Name>Ansprechpartner Käufer</cbc:Name>
+            </cac:Contact>
+        </cac:Party>
+    </cac:AccountingCustomerParty>
+    <cac:Delivery>
+        <cac:DeliveryLocation>
+            <cac:Address>
+                <cbc:StreetName>[Deliver to address line 1]</cbc:StreetName>
+                <cbc:CityName>[Deliver to city]</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:Address>
+        </cac:DeliveryLocation>
+        <cac:DeliveryParty>
+            <cac:PartyName>
+                <cbc:Name>Außenstelle XY</cbc:Name>
+            </cac:PartyName>
+        </cac:DeliveryParty>
+    </cac:Delivery>
+    <cac:PaymentMeans>
+        <cbc:PaymentMeansCode>58</cbc:PaymentMeansCode>
+        <cac:PayeeFinancialAccount>
+            <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+            <cbc:ID>DE75512108001245126199</cbc:ID>
+        </cac:PayeeFinancialAccount>
+    </cac:PaymentMeans>
+    <cac:PaymentMeans>
+        <cbc:PaymentMeansCode>58</cbc:PaymentMeansCode>
+        <cac:PayeeFinancialAccount>
+            <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+            <cbc:ID>DE12500105170648489890</cbc:ID>
+        </cac:PayeeFinancialAccount>
+    </cac:PaymentMeans>
+    <cac:PaymentTerms>
+        <cbc:Note>#SKONTO#TAGE=7#PROZENT=2.00#
+#SKONTO#TAGE=14#PROZENT=1.00#
+#SKONTO#TAGE=30#PROZENT=0.00#</cbc:Note>
+    </cac:PaymentTerms>
+    <cac:TaxTotal>
+        <cbc:TaxAmount currencyID="EUR">414.2</cbc:TaxAmount>
+        <cac:TaxSubtotal>
+            <cbc:TaxableAmount currencyID="EUR">2180</cbc:TaxableAmount>
+            <cbc:TaxAmount currencyID="EUR">414.2</cbc:TaxAmount>
+            <cac:TaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:TaxCategory>
+        </cac:TaxSubtotal>
+    </cac:TaxTotal>
+    <cac:LegalMonetaryTotal>
+        <cbc:LineExtensionAmount currencyID="EUR">2180</cbc:LineExtensionAmount>
+        <cbc:TaxExclusiveAmount currencyID="EUR">2180</cbc:TaxExclusiveAmount>
+        <cbc:TaxInclusiveAmount currencyID="EUR">2594.2</cbc:TaxInclusiveAmount>
+        <cbc:PayableAmount currencyID="EUR">2594.2</cbc:PayableAmount>
+    </cac:LegalMonetaryTotal>
+    <cac:InvoiceLine>
+        <cbc:ID>1</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">10</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">2180</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Description>Sitz: 10-301 blau, Rücken: 10-301 blau, ….</cbc:Description>
+            <cbc:Name>Drehstuhl</cbc:Name>
+            <cac:SellersItemIdentification>
+                <cbc:ID>AL281982</cbc:ID>
+            </cac:SellersItemIdentification>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">218</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+</ubl:Invoice>
--- a/tests/inputs/ubl/01.11a-INVOICE_ubl.xml
+++ b/tests/inputs/ubl/01.11a-INVOICE_ubl.xml
@@ -0,0 +1,169 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ubl:Invoice xmlns:ubl="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2"
+             xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2"
+             xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2">
+    <cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</cbc:CustomizationID>
+    <cbc:ProfileID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</cbc:ProfileID>
+    <cbc:ID>Rechnungsnummer</cbc:ID>
+    <cbc:IssueDate>2016-02-23</cbc:IssueDate>
+    <cbc:DueDate>2016-03-08</cbc:DueDate>
+    <cbc:InvoiceTypeCode>380</cbc:InvoiceTypeCode>
+    <cbc:DocumentCurrencyCode>EUR</cbc:DocumentCurrencyCode>
+    <cbc:BuyerReference>04011000-12352-79</cbc:BuyerReference>
+    <cac:OrderReference>
+        <cbc:ID>Dummywert</cbc:ID>
+        <cbc:SalesOrderID>Auftragsnummer</cbc:SalesOrderID>
+    </cac:OrderReference>
+    <cac:AccountingSupplierParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">seller@email.de</cbc:EndpointID>
+            <cac:PartyName>
+                <cbc:Name>[Seller trading name]</cbc:Name>
+            </cac:PartyName>
+            <cac:PostalAddress>
+                <cbc:StreetName>[Seller address line 1]</cbc:StreetName>
+                <cbc:CityName>[Seller city]</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyTaxScheme>
+                <cbc:CompanyID>DE123456789</cbc:CompanyID>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:PartyTaxScheme>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>[Seller name]</cbc:RegistrationName>
+                <cbc:CompanyID>HRB 123</cbc:CompanyID>
+                <cbc:CompanyLegalForm>Amtsgericht […], Geschäftsführer: […], Sitz der Gesellschaft […], Aufsichtsratvorsitzender: […]</cbc:CompanyLegalForm>
+            </cac:PartyLegalEntity>
+            <cac:Contact>
+                <cbc:Name>Auskunft erteilt Ihnen</cbc:Name>
+                <cbc:Telephone>1234567890</cbc:Telephone>
+                <cbc:ElectronicMail>seller@test.de</cbc:ElectronicMail>
+            </cac:Contact>
+        </cac:Party>
+    </cac:AccountingSupplierParty>
+    <cac:AccountingCustomerParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">buyer@info.de</cbc:EndpointID>
+            <cac:PostalAddress>
+                <cbc:StreetName>[Buyer address line 1]</cbc:StreetName>
+                <cbc:CityName>[Buyer city]</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>[Buyer name]</cbc:RegistrationName>
+            </cac:PartyLegalEntity>
+        </cac:Party>
+    </cac:AccountingCustomerParty>
+    <cac:PaymentMeans>
+        <cbc:PaymentMeansCode>58</cbc:PaymentMeansCode>
+        <cac:PayeeFinancialAccount>
+            <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+            <cbc:ID>DE12500105170648489890</cbc:ID>
+        </cac:PayeeFinancialAccount>
+    </cac:PaymentMeans>
+    <cac:PaymentMeans>
+        <cbc:PaymentMeansCode>58</cbc:PaymentMeansCode>
+        <cac:PayeeFinancialAccount>
+            <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+            <cbc:ID>DE89370400440532013000</cbc:ID>
+        </cac:PayeeFinancialAccount>
+    </cac:PaymentMeans>
+    <cac:PaymentMeans>
+        <cbc:PaymentMeansCode>58</cbc:PaymentMeansCode>
+        <cac:PayeeFinancialAccount>
+            <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+            <cbc:ID>DE75512108001245126199</cbc:ID>
+        </cac:PayeeFinancialAccount>
+    </cac:PaymentMeans>
+    <cac:TaxTotal>
+        <cbc:TaxAmount currencyID="EUR">44.61</cbc:TaxAmount>
+        <cac:TaxSubtotal>
+            <cbc:TaxableAmount currencyID="EUR">234.77</cbc:TaxableAmount>
+            <cbc:TaxAmount currencyID="EUR">44.61</cbc:TaxAmount>
+            <cac:TaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:TaxCategory>
+        </cac:TaxSubtotal>
+    </cac:TaxTotal>
+    <cac:LegalMonetaryTotal>
+        <cbc:LineExtensionAmount currencyID="EUR">234.77</cbc:LineExtensionAmount>
+        <cbc:TaxExclusiveAmount currencyID="EUR">234.77</cbc:TaxExclusiveAmount>
+        <cbc:TaxInclusiveAmount currencyID="EUR">279.38</cbc:TaxInclusiveAmount>
+        <cbc:PayableAmount currencyID="EUR">279.38</cbc:PayableAmount>
+    </cac:LegalMonetaryTotal>
+    <cac:InvoiceLine>
+        <cbc:ID>0010</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">3</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">214.26</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Huawei E5573 Mobiler 4G Hotspot sw</cbc:Name>
+            <cac:SellersItemIdentification>
+                <cbc:ID>CON-1401888</cbc:ID>
+            </cac:SellersItemIdentification>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">71.42</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+    <cac:InvoiceLine>
+        <cbc:ID>0020</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">1</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">10.71</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Beschaffungspauschale</cbc:Name>
+            <cac:SellersItemIdentification>
+                <cbc:ID>51001</cbc:ID>
+            </cac:SellersItemIdentification>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">10.71</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+    <cac:InvoiceLine>
+        <cbc:ID>0030</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">1</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">9.8</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Lieferkosten</cbc:Name>
+            <cac:SellersItemIdentification>
+                <cbc:ID>51010</cbc:ID>
+            </cac:SellersItemIdentification>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">9.8</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+</ubl:Invoice>
--- a/tests/inputs/ubl/01.12a-INVOICE_ubl.xml
+++ b/tests/inputs/ubl/01.12a-INVOICE_ubl.xml
@@ -0,0 +1,211 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ubl:Invoice xmlns:ubl="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2"
+             xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2"
+             xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2">
+    <cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</cbc:CustomizationID>
+    <cbc:ProfileID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</cbc:ProfileID>
+    <cbc:ID>Rechnungsnummer</cbc:ID>
+    <cbc:IssueDate>2016-03-02</cbc:IssueDate>
+    <cbc:DueDate>2016-03-16</cbc:DueDate>
+    <cbc:InvoiceTypeCode>380</cbc:InvoiceTypeCode>
+    <cbc:DocumentCurrencyCode>EUR</cbc:DocumentCurrencyCode>
+    <cbc:BuyerReference>04011000-12353-76</cbc:BuyerReference>
+    <cac:OrderReference>
+        <cbc:ID>Dummywert</cbc:ID>
+        <cbc:SalesOrderID>Auftragsnummer</cbc:SalesOrderID>
+    </cac:OrderReference>
+    <cac:AccountingSupplierParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">seller@email.de</cbc:EndpointID>
+            <cac:PartyName>
+                <cbc:Name>[Seller trading name]</cbc:Name>
+            </cac:PartyName>
+            <cac:PostalAddress>
+                <cbc:StreetName>[Seller address line 1]</cbc:StreetName>
+                <cbc:CityName>[Seller city]</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyTaxScheme>
+                <cbc:CompanyID>DE123456789</cbc:CompanyID>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:PartyTaxScheme>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>[Seller name]</cbc:RegistrationName>
+                <cbc:CompanyID>HRB 123</cbc:CompanyID>
+                <cbc:CompanyLegalForm>Amtsgericht […], Geschäftsführer: […], Sitz der Gesellschaft […], Aufsichtsratvorsitzender: […]</cbc:CompanyLegalForm>
+            </cac:PartyLegalEntity>
+            <cac:Contact>
+                <cbc:Name>Auskunft erteilt Ihnen</cbc:Name>
+                <cbc:Telephone>1234567890</cbc:Telephone>
+                <cbc:ElectronicMail>seller@test.de</cbc:ElectronicMail>
+            </cac:Contact>
+        </cac:Party>
+    </cac:AccountingSupplierParty>
+    <cac:AccountingCustomerParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">buyer@info.de</cbc:EndpointID>
+            <cac:PostalAddress>
+                <cbc:StreetName>[Buyer address line 1]</cbc:StreetName>
+                <cbc:CityName>[Buyer city]</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>[Buyer name]</cbc:RegistrationName>
+            </cac:PartyLegalEntity>
+        </cac:Party>
+    </cac:AccountingCustomerParty>
+    <cac:PaymentMeans>
+        <cbc:PaymentMeansCode>58</cbc:PaymentMeansCode>
+        <cac:PayeeFinancialAccount>
+            <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+            <cbc:ID>DE12500105170648489890</cbc:ID>
+        </cac:PayeeFinancialAccount>
+    </cac:PaymentMeans>
+    <cac:PaymentMeans>
+        <cbc:PaymentMeansCode>58</cbc:PaymentMeansCode>
+        <cac:PayeeFinancialAccount>
+            <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+            <cbc:ID>DE89370400440532013000</cbc:ID>
+        </cac:PayeeFinancialAccount>
+    </cac:PaymentMeans>
+    <cac:PaymentMeans>
+        <cbc:PaymentMeansCode>58</cbc:PaymentMeansCode>
+        <cac:PayeeFinancialAccount>
+            <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+            <cbc:ID>DE75512108001245126199</cbc:ID>
+        </cac:PayeeFinancialAccount>
+    </cac:PaymentMeans>
+    <cac:TaxTotal>
+        <cbc:TaxAmount currencyID="EUR">48.76</cbc:TaxAmount>
+        <cac:TaxSubtotal>
+            <cbc:TaxableAmount currencyID="EUR">256.61</cbc:TaxableAmount>
+            <cbc:TaxAmount currencyID="EUR">48.76</cbc:TaxAmount>
+            <cac:TaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:TaxCategory>
+        </cac:TaxSubtotal>
+    </cac:TaxTotal>
+    <cac:LegalMonetaryTotal>
+        <cbc:LineExtensionAmount currencyID="EUR">256.61</cbc:LineExtensionAmount>
+        <cbc:TaxExclusiveAmount currencyID="EUR">256.61</cbc:TaxExclusiveAmount>
+        <cbc:TaxInclusiveAmount currencyID="EUR">305.37</cbc:TaxInclusiveAmount>
+        <cbc:PayableAmount currencyID="EUR">305.37</cbc:PayableAmount>
+    </cac:LegalMonetaryTotal>
+    <cac:InvoiceLine>
+        <cbc:ID>0010</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">1</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">12.52</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Keyboard/Maus - weiß</cbc:Name>
+            <cac:SellersItemIdentification>
+                <cbc:ID>CUF-90541432</cbc:ID>
+            </cac:SellersItemIdentification>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">12.52</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+    <cac:InvoiceLine>
+        <cbc:ID>0020</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">2</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">126.9</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>MX Master</cbc:Name>
+            <cac:SellersItemIdentification>
+                <cbc:ID>CUF-90597289</cbc:ID>
+            </cac:SellersItemIdentification>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">63.45</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+    <cac:InvoiceLine>
+        <cbc:ID>0030</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">2</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">95.64</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Tastatur Deutsch</cbc:Name>
+            <cac:SellersItemIdentification>
+                <cbc:ID>CUF-90271291</cbc:ID>
+            </cac:SellersItemIdentification>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">47.82</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+    <cac:InvoiceLine>
+        <cbc:ID>0040</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">1</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">11.75</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Beschaffungspauschale</cbc:Name>
+            <cac:SellersItemIdentification>
+                <cbc:ID>51001</cbc:ID>
+            </cac:SellersItemIdentification>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">11.75</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+    <cac:InvoiceLine>
+        <cbc:ID>0050</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">1</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">9.8</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Lieferkosten</cbc:Name>
+            <cac:SellersItemIdentification>
+                <cbc:ID>51010</cbc:ID>
+            </cac:SellersItemIdentification>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">9.8</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+</ubl:Invoice>
--- a/tests/inputs/ubl/01.13a-INVOICE_ubl.xml
+++ b/tests/inputs/ubl/01.13a-INVOICE_ubl.xml
@@ -0,0 +1,298 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ubl:Invoice xmlns:ubl="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2"
+             xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2"
+             xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2">
+    <cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</cbc:CustomizationID>
+    <cbc:ProfileID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</cbc:ProfileID>
+    <cbc:ID>Rechnungsnummer</cbc:ID>
+    <cbc:IssueDate>2015-01-09</cbc:IssueDate>
+    <cbc:DueDate>2015-01-24</cbc:DueDate>
+    <cbc:InvoiceTypeCode>380</cbc:InvoiceTypeCode>
+    <cbc:Note>#ADU#Bearbeitungszeitraum: Dezember 2014/ 5.01.-09.01.2015 Abschlagsrechnung A 9</cbc:Note>
+    <cbc:DocumentCurrencyCode>EUR</cbc:DocumentCurrencyCode>
+    <cbc:BuyerReference>04011000-12354-73</cbc:BuyerReference>
+    <cac:OrderReference>
+        <cbc:ID>Dummywert</cbc:ID>
+        <cbc:SalesOrderID>Auftragsnummer</cbc:SalesOrderID>
+    </cac:OrderReference>
+    <cac:ProjectReference>
+        <cbc:ID>PR12345678</cbc:ID>
+    </cac:ProjectReference>
+    <cac:AccountingSupplierParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">seller@email.de</cbc:EndpointID>
+            <cac:PostalAddress>
+                <cbc:StreetName>[Seller address line 1]</cbc:StreetName>
+                <cbc:CityName>[Seller city]</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyTaxScheme>
+                <cbc:CompanyID>DE123456789</cbc:CompanyID>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:PartyTaxScheme>
+            <cac:PartyTaxScheme>
+                <cbc:CompanyID>123/456/789</cbc:CompanyID>
+                <cac:TaxScheme>
+                    <cbc:ID>???</cbc:ID>
+                </cac:TaxScheme>
+            </cac:PartyTaxScheme>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>[Seller name]</cbc:RegistrationName>
+            </cac:PartyLegalEntity>
+            <cac:Contact>
+                <cbc:Name>[Seller contact person]</cbc:Name>
+                <cbc:Telephone>1234567890</cbc:Telephone>
+                <cbc:ElectronicMail>info@seller.de</cbc:ElectronicMail>
+            </cac:Contact>
+        </cac:Party>
+    </cac:AccountingSupplierParty>
+    <cac:AccountingCustomerParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">buyer@info.de</cbc:EndpointID>
+            <cac:PostalAddress>
+                <cbc:StreetName>[Buyer address line 1]</cbc:StreetName>
+                <cbc:CityName>[Buyer city]</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>[Buyer name]</cbc:RegistrationName>
+            </cac:PartyLegalEntity>
+        </cac:Party>
+    </cac:AccountingCustomerParty>
+    <cac:PaymentMeans>
+        <cbc:PaymentMeansCode>58</cbc:PaymentMeansCode>
+        <cac:PayeeFinancialAccount>
+             <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+            <cbc:ID>DE75512108001245126199</cbc:ID>
+        </cac:PayeeFinancialAccount>
+    </cac:PaymentMeans>
+    <cac:PaymentTerms>
+        <cbc:Note>Bitte überweisen Sie bis zum 24.01.2015 auf das unten aufgeführte Konto.</cbc:Note>
+    </cac:PaymentTerms>
+    <cac:TaxTotal>
+        <cbc:TaxAmount currencyID="EUR">1012.7</cbc:TaxAmount>
+        <cac:TaxSubtotal>
+            <cbc:TaxableAmount currencyID="EUR">5330</cbc:TaxableAmount>
+            <cbc:TaxAmount currencyID="EUR">1012.7</cbc:TaxAmount>
+            <cac:TaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:TaxCategory>
+        </cac:TaxSubtotal>
+    </cac:TaxTotal>
+    <cac:LegalMonetaryTotal>
+        <cbc:LineExtensionAmount currencyID="EUR">5330</cbc:LineExtensionAmount>
+        <cbc:TaxExclusiveAmount currencyID="EUR">5330</cbc:TaxExclusiveAmount>
+        <cbc:TaxInclusiveAmount currencyID="EUR">6342.7</cbc:TaxInclusiveAmount>
+        <cbc:PayableAmount currencyID="EUR">6342.7</cbc:PayableAmount>
+    </cac:LegalMonetaryTotal>
+    <cac:InvoiceLine>
+        <cbc:ID>7</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">1</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">400</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Aussetzen der Kanten Neorokokosofa laut N2</cbc:Name>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">400</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+    <cac:InvoiceLine>
+        <cbc:ID>8</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">1</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">240</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Aussetzen der Kanten am Sofa um 1780 laut N2</cbc:Name>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">240</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+    <cac:InvoiceLine>
+        <cbc:ID>9</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">1</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">120</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Analyse Pigment</cbc:Name>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">120</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+    <cac:InvoiceLine>
+        <cbc:ID>10</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">1</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">70</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Querschliff</cbc:Name>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">70</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+    <cac:InvoiceLine>
+        <cbc:ID>5.2</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">1</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">140</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Furnierniederlegung 50 %</cbc:Name>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">140</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+    <cac:InvoiceLine>
+        <cbc:ID>2</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">1</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">400</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Transport 25 %</cbc:Name>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">400</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+    <cac:InvoiceLine>
+        <cbc:ID>7.1</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">1</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">280</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Sofa um 1780 Reinigung der Oberfläche</cbc:Name>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">280</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+    <cac:InvoiceLine>
+        <cbc:ID>7.2</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">1</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">480</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Konstruktive Ertüchtigung, Ergänzung eines Beines</cbc:Name>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">480</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+    <cac:InvoiceLine>
+        <cbc:ID>7.3</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">1</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">1600</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Abnahme der rotbraunen Fassung 50 %</cbc:Name>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">1600</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+    <cac:InvoiceLine>
+        <cbc:ID>9.1</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">1</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">400</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Neorokokosofo konstruktive Ertüchtigung</cbc:Name>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">400</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+    <cac:InvoiceLine>
+        <cbc:ID>9.2</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">1</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">1200</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Reinigung, Fassungssicherung 50 %</cbc:Name>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">1200</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+</ubl:Invoice>
--- a/tests/inputs/ubl/01.14a-INVOICE_ubl.xml
+++ b/tests/inputs/ubl/01.14a-INVOICE_ubl.xml
@@ -0,0 +1,188 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ubl:Invoice xmlns:ubl="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2"
+             xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2"
+             xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2">
+    <cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</cbc:CustomizationID>
+    <cbc:ProfileID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</cbc:ProfileID>
+    <cbc:ID>1234567</cbc:ID>
+    <cbc:IssueDate>2018-04-13</cbc:IssueDate>
+    <cbc:DueDate>2018-04-13</cbc:DueDate>
+    <cbc:InvoiceTypeCode>380</cbc:InvoiceTypeCode>
+    <cbc:Note>#AAC#Invoice Note Description</cbc:Note>
+    <cbc:DocumentCurrencyCode>EUR</cbc:DocumentCurrencyCode>
+    <cbc:BuyerReference>90000000-03083-72</cbc:BuyerReference>
+    <cac:InvoicePeriod>
+        <cbc:StartDate>2018-04-13</cbc:StartDate>
+        <cbc:EndDate>2018-04-13</cbc:EndDate>
+    </cac:InvoicePeriod>
+    <cac:OrderReference>
+        <cbc:ID>65002278</cbc:ID>
+        <cbc:SalesOrderID>ABC123456789</cbc:SalesOrderID>
+    </cac:OrderReference>
+    <cac:AccountingSupplierParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">seller@email.de</cbc:EndpointID>
+            <cac:PostalAddress>
+                <cbc:CityName>[Seller city]</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyTaxScheme>
+                <cbc:CompanyID>ATU123456789</cbc:CompanyID>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:PartyTaxScheme>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>[Seller name]</cbc:RegistrationName>
+                <cbc:CompanyID>HRB 123</cbc:CompanyID>
+            </cac:PartyLegalEntity>
+            <cac:Contact>
+                <cbc:Name>Tim Tester</cbc:Name>
+                <cbc:Telephone>012 3456789</cbc:Telephone>
+                <cbc:ElectronicMail>tim.tester@test.com</cbc:ElectronicMail>
+            </cac:Contact>
+        </cac:Party>
+    </cac:AccountingSupplierParty>
+    <cac:AccountingCustomerParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">buyer@info.de</cbc:EndpointID>
+            <cac:PartyIdentification>
+                <cbc:ID>138</cbc:ID>
+            </cac:PartyIdentification>
+            <cac:PostalAddress>
+                <cbc:CityName>[Buyer city]</cbc:CityName>
+                <cbc:PostalZone>98765</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyTaxScheme>
+                <cbc:CompanyID>DE12345ABC</cbc:CompanyID>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:PartyTaxScheme>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>[Buyer name]</cbc:RegistrationName>
+                <cbc:CompanyID>HRB 3456</cbc:CompanyID>
+            </cac:PartyLegalEntity>
+            <cac:Contact>
+                <cbc:Name>Tina Tester</cbc:Name>
+                <cbc:Telephone>0800 123456</cbc:Telephone>
+                <cbc:ElectronicMail>tester@test.de</cbc:ElectronicMail>
+            </cac:Contact>
+        </cac:Party>
+    </cac:AccountingCustomerParty>
+    <cac:PayeeParty>
+        <cac:PartyIdentification>
+            <cbc:ID>74</cbc:ID>
+        </cac:PartyIdentification>
+        <cac:PartyName>
+            <cbc:Name>[Payee name]</cbc:Name>
+        </cac:PartyName>
+    </cac:PayeeParty>
+    <cac:TaxRepresentativeParty>
+        <cac:PartyName>
+            <cbc:Name>[Seller tax representative name]</cbc:Name>
+        </cac:PartyName>
+        <cac:PostalAddress>
+            <cac:Country>
+                <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+            </cac:Country>
+        </cac:PostalAddress>
+        <cac:PartyTaxScheme>
+            <cbc:CompanyID>DE124567</cbc:CompanyID>
+            <cac:TaxScheme>
+                <cbc:ID>VAT</cbc:ID>
+            </cac:TaxScheme>
+        </cac:PartyTaxScheme>
+    </cac:TaxRepresentativeParty>
+    <cac:Delivery>
+        <cbc:ActualDeliveryDate>2018-04-13</cbc:ActualDeliveryDate>
+        <cac:DeliveryLocation>
+            <cbc:ID>68</cbc:ID>
+            <cac:Address>
+                <cbc:StreetName>[Deliver to street]</cbc:StreetName>
+                <cbc:AdditionalStreetName>4. OG</cbc:AdditionalStreetName>
+                <cbc:CityName>[Deliver to city]</cbc:CityName>
+                <cbc:PostalZone>98765</cbc:PostalZone>
+                <cbc:CountrySubentity>Bayern</cbc:CountrySubentity>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:Address>
+        </cac:DeliveryLocation>
+        <cac:DeliveryParty>
+            <cac:PartyName>
+                <cbc:Name>[Deliver to party name]</cbc:Name>
+            </cac:PartyName>
+        </cac:DeliveryParty>
+    </cac:Delivery>
+    <cac:PaymentMeans>
+        <cbc:PaymentMeansCode>58</cbc:PaymentMeansCode>
+        <cbc:PaymentID>Deb. 12345 / Fact. 9876543</cbc:PaymentID>
+        <cac:PayeeFinancialAccount>
+            <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+            <cbc:ID>DE75512108001245126199</cbc:ID>
+        </cac:PayeeFinancialAccount>
+    </cac:PaymentMeans>
+    <cac:TaxTotal>
+        <cbc:TaxAmount currencyID="EUR">2048.44</cbc:TaxAmount>
+        <cac:TaxSubtotal>
+            <cbc:TaxableAmount currencyID="EUR">10781.25</cbc:TaxableAmount>
+            <cbc:TaxAmount currencyID="EUR">2048.44</cbc:TaxAmount>
+            <cac:TaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:TaxCategory>
+        </cac:TaxSubtotal>
+    </cac:TaxTotal>
+    <cac:LegalMonetaryTotal>
+        <cbc:LineExtensionAmount currencyID="EUR">10781.25</cbc:LineExtensionAmount>
+        <cbc:TaxExclusiveAmount currencyID="EUR">10781.25</cbc:TaxExclusiveAmount>
+        <cbc:TaxInclusiveAmount currencyID="EUR">12829.69</cbc:TaxInclusiveAmount>
+        <cbc:PayableAmount currencyID="EUR">12829.69</cbc:PayableAmount>
+    </cac:LegalMonetaryTotal>
+    <cac:InvoiceLine>
+        <cbc:ID>1</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">33</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">4743.75</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Beratung</cbc:Name>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">143.75</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+    <cac:InvoiceLine>
+        <cbc:ID>2</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">42</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">6037.5</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Beratung</cbc:Name>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">143.75</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+</ubl:Invoice>
--- a/tests/inputs/ubl/01.15a-INVOICE_ubl.xml
+++ b/tests/inputs/ubl/01.15a-INVOICE_ubl.xml
--- a/tests/inputs/ubl/01.17a-INVOICE_ubl.xml
+++ b/tests/inputs/ubl/01.17a-INVOICE_ubl.xml
@@ -0,0 +1,146 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ubl:Invoice xmlns:ubl="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2"
+             xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2"
+             xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2">
+    <cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</cbc:CustomizationID>
+    <cbc:ProfileID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</cbc:ProfileID>
+    <cbc:ID>123456XX</cbc:ID>
+    <cbc:IssueDate>2016-04-04</cbc:IssueDate>
+    <cbc:InvoiceTypeCode>380</cbc:InvoiceTypeCode>
+    <cbc:Note>#ADU#Es gelten unsere Allgem. Geschäftsbedingungen, die Sie unter […] finden.</cbc:Note>
+    <cbc:DocumentCurrencyCode>EUR</cbc:DocumentCurrencyCode>
+    <cbc:BuyerReference>04011000-12345-03</cbc:BuyerReference>
+    <cac:AccountingSupplierParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">seller@email.de</cbc:EndpointID>
+            <cac:PartyName>
+                <cbc:Name>[Seller trading name]</cbc:Name>
+            </cac:PartyName>
+            <cac:PostalAddress>
+                <cbc:StreetName>[Seller address line 1]</cbc:StreetName>
+                <cbc:CityName>[Seller city]</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyTaxScheme>
+                <cbc:CompanyID>DE 123456789</cbc:CompanyID>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:PartyTaxScheme>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>[Seller name]</cbc:RegistrationName>
+                <cbc:CompanyID>[HRA-Eintrag]</cbc:CompanyID>
+                <cbc:CompanyLegalForm>123/456/7890, HRA-Eintrag in […]</cbc:CompanyLegalForm>
+            </cac:PartyLegalEntity>
+            <cac:Contact>
+                <cbc:Name>nicht vorhanden</cbc:Name>
+                <cbc:Telephone>+49 1234-5678</cbc:Telephone>
+                <cbc:ElectronicMail>seller@email.de</cbc:ElectronicMail>
+            </cac:Contact>
+        </cac:Party>
+    </cac:AccountingSupplierParty>
+    <cac:AccountingCustomerParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">buyer@info.de</cbc:EndpointID>
+            <cac:PartyIdentification>
+                <cbc:ID>[Buyer identifier]</cbc:ID>
+            </cac:PartyIdentification>
+            <cac:PostalAddress>
+                <cbc:StreetName>[Buyer address line 1]</cbc:StreetName>
+                <cbc:CityName>[Buyer city]</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>[Buyer name]</cbc:RegistrationName>
+            </cac:PartyLegalEntity>
+        </cac:Party>
+    </cac:AccountingCustomerParty>
+    <cac:PaymentMeans>
+        <cbc:PaymentMeansCode>58</cbc:PaymentMeansCode>
+        <cac:PayeeFinancialAccount>
+            <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+            <cbc:ID>DE75512108001245126199</cbc:ID>
+        </cac:PayeeFinancialAccount>
+    </cac:PaymentMeans>
+    <cac:PaymentTerms>
+        <cbc:Note>Zahlbar sofort ohne Abzug.</cbc:Note>
+    </cac:PaymentTerms>
+    <cac:TaxTotal>
+        <cbc:TaxAmount currencyID="EUR">22.04</cbc:TaxAmount>
+        <cac:TaxSubtotal>
+            <cbc:TaxableAmount currencyID="EUR">314.86</cbc:TaxableAmount>
+            <cbc:TaxAmount currencyID="EUR">22.04</cbc:TaxAmount>
+            <cac:TaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>7</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:TaxCategory>
+        </cac:TaxSubtotal>
+    </cac:TaxTotal>
+    <cac:LegalMonetaryTotal>
+        <cbc:LineExtensionAmount currencyID="EUR">314.86</cbc:LineExtensionAmount>
+        <cbc:TaxExclusiveAmount currencyID="EUR">314.86</cbc:TaxExclusiveAmount>
+        <cbc:TaxInclusiveAmount currencyID="EUR">336.9</cbc:TaxInclusiveAmount>
+        <cbc:PayableRoundingAmount currencyID="EUR">0.01</cbc:PayableRoundingAmount>
+        <cbc:PayableAmount currencyID="EUR">336.91</cbc:PayableAmount>
+    </cac:LegalMonetaryTotal>
+    <cac:InvoiceLine>
+        <cbc:ID>Zeitschrift [...]</cbc:ID>
+        <cbc:Note>Die letzte Lieferung im Rahmen des abgerechneten Abonnements erfolgt in 12/2016 Lieferung erfolgt / erfolgte direkt vom Verlag</cbc:Note>
+        <cbc:InvoicedQuantity unitCode="XPP">1</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">288.79</cbc:LineExtensionAmount>
+        <cac:InvoicePeriod>
+            <cbc:StartDate>2016-01-01</cbc:StartDate>
+            <cbc:EndDate>2016-12-31</cbc:EndDate>
+        </cac:InvoicePeriod>
+        <cac:OrderLineReference>
+            <cbc:LineID>6171175.1</cbc:LineID>
+        </cac:OrderLineReference>
+        <cac:Item>
+            <cbc:Description>Zeitschrift Inland</cbc:Description>
+            <cbc:Name>Zeitschrift [...]</cbc:Name>
+            <cac:SellersItemIdentification>
+                <cbc:ID>246</cbc:ID>
+            </cac:SellersItemIdentification>
+            <cac:CommodityClassification>
+                <cbc:ItemClassificationCode listID="IB">0721-880X</cbc:ItemClassificationCode>
+            </cac:CommodityClassification>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>7</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">288.79</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+    <cac:InvoiceLine>
+        <cbc:ID>Porto + Versandkosten</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">1</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">26.07</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Porto + Versandkosten</cbc:Name>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>7</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">26.07</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+</ubl:Invoice>
--- a/tests/inputs/ubl/01.18a-INVOICE_ubl.xml
+++ b/tests/inputs/ubl/01.18a-INVOICE_ubl.xml
@@ -0,0 +1,197 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ubl:Invoice xmlns:ubl="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2"
+             xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2"
+             xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2">
+    <cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</cbc:CustomizationID>
+    <cbc:ProfileID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</cbc:ProfileID>
+    <cbc:ID>PRG1502112</cbc:ID>
+    <cbc:IssueDate>2015-04-24</cbc:IssueDate>
+    <cbc:InvoiceTypeCode>384</cbc:InvoiceTypeCode>
+    <cbc:Note>#ADU#Trainer: Herr […]</cbc:Note>
+    <cbc:DocumentCurrencyCode>EUR</cbc:DocumentCurrencyCode>
+    <cbc:BuyerReference>99000000-18188-18</cbc:BuyerReference>
+    <cac:InvoicePeriod>
+        <cbc:StartDate>2015-04-20</cbc:StartDate>
+        <cbc:EndDate>2015-04-24</cbc:EndDate>
+    </cac:InvoicePeriod>
+    <cac:BillingReference>
+        <cac:InvoiceDocumentReference>
+            <cbc:ID>PRG1502168</cbc:ID>
+        </cac:InvoiceDocumentReference>
+    </cac:BillingReference>
+    <cac:ProjectReference>
+        <cbc:ID>PR456789</cbc:ID>
+    </cac:ProjectReference>
+    <cac:AccountingSupplierParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">seller@email.de</cbc:EndpointID>
+            <cac:PostalAddress>
+                <cbc:StreetName>[Seller address line 1]</cbc:StreetName>
+                <cbc:CityName>[Seller city]</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyTaxScheme>
+                <cbc:CompanyID>DE123456789</cbc:CompanyID>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:PartyTaxScheme>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>[Seller name]</cbc:RegistrationName>
+                <cbc:CompanyID>HRB 123456</cbc:CompanyID>
+                <cbc:CompanyLegalForm>Sitz der Gesellschaft […], Registergericht […], Amtsgericht […]</cbc:CompanyLegalForm>
+            </cac:PartyLegalEntity>
+            <cac:Contact>
+                <cbc:Name>[Seller contact person]</cbc:Name>
+                <cbc:Telephone>+49 123456789</cbc:Telephone>
+                <cbc:ElectronicMail>xxx@schulung.de</cbc:ElectronicMail>
+            </cac:Contact>
+        </cac:Party>
+    </cac:AccountingSupplierParty>
+    <cac:AccountingCustomerParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">buyer@info.de</cbc:EndpointID>
+            <cac:PartyIdentification>
+                <cbc:ID>BI123456</cbc:ID>
+            </cac:PartyIdentification>
+            <cac:PostalAddress>
+                <cbc:StreetName>[Buyer address line 1]</cbc:StreetName>
+                <cbc:CityName>[Buyer city]</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>[Buyer name]</cbc:RegistrationName>
+            </cac:PartyLegalEntity>
+        </cac:Party>
+    </cac:AccountingCustomerParty>
+    <cac:Delivery>
+        <cac:DeliveryLocation>
+            <cac:Address>
+                <cbc:CityName>Schulungsort</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:Address>
+        </cac:DeliveryLocation>
+        <cac:DeliveryParty>
+            <cac:PartyName>
+                <cbc:Name>Schulungsanbieter</cbc:Name>
+            </cac:PartyName>
+        </cac:DeliveryParty>
+    </cac:Delivery>
+    <cac:PaymentMeans>
+        <cbc:PaymentMeansCode>58</cbc:PaymentMeansCode>
+        <cac:PayeeFinancialAccount>
+            <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+            <cbc:ID>DE75512108001245126199</cbc:ID>
+        </cac:PayeeFinancialAccount>
+    </cac:PaymentMeans>
+    <cac:PaymentMeans>
+        <cbc:PaymentMeansCode>58</cbc:PaymentMeansCode>
+        <cac:PayeeFinancialAccount>
+            <cbc:ID>DE12500105170648489890</cbc:ID>
+        </cac:PayeeFinancialAccount>
+    </cac:PaymentMeans>
+    <cac:PaymentTerms>
+        <cbc:Note>14 Tage</cbc:Note>
+    </cac:PaymentTerms>
+    <cac:TaxTotal>
+        <cbc:TaxAmount currencyID="EUR">1685.3</cbc:TaxAmount>
+        <cac:TaxSubtotal>
+            <cbc:TaxableAmount currencyID="EUR">8870</cbc:TaxableAmount>
+            <cbc:TaxAmount currencyID="EUR">1685.3</cbc:TaxAmount>
+            <cac:TaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:TaxCategory>
+        </cac:TaxSubtotal>
+    </cac:TaxTotal>
+    <cac:LegalMonetaryTotal>
+        <cbc:LineExtensionAmount currencyID="EUR">8870</cbc:LineExtensionAmount>
+        <cbc:TaxExclusiveAmount currencyID="EUR">8870</cbc:TaxExclusiveAmount>
+        <cbc:TaxInclusiveAmount currencyID="EUR">10555.3</cbc:TaxInclusiveAmount>
+        <cbc:PayableAmount currencyID="EUR">10555.3</cbc:PayableAmount>
+    </cac:LegalMonetaryTotal>
+    <cac:InvoiceLine>
+        <cbc:ID>Seminar: […]</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="DAY">5</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">6700</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Seminar</cbc:Name>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">1340</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+    <cac:InvoiceLine>
+        <cbc:ID>Raumkosten Schulungsort</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="DAY">5</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">1500</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Raumkosten</cbc:Name>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">300</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+    <cac:InvoiceLine>
+        <cbc:ID>Reisekostenpauschale</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">5</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">450</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Reisekostenpauschale</cbc:Name>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">90</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+    <cac:InvoiceLine>
+        <cbc:ID>Seminarunterlagen</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">11</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">220</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Seminarunterlagen</cbc:Name>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">20</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+</ubl:Invoice>
--- a/tests/inputs/ubl/01.19a-INVOICE_ubl.xml
+++ b/tests/inputs/ubl/01.19a-INVOICE_ubl.xml
@@ -0,0 +1,182 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ubl:Invoice xmlns:ubl="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2"
+             xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2"
+             xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2">
+    <cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</cbc:CustomizationID>
+    <cbc:ProfileID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</cbc:ProfileID>
+    <cbc:ID>PRG1502112</cbc:ID>
+    <cbc:IssueDate>2015-04-24</cbc:IssueDate>
+    <cbc:InvoiceTypeCode>380</cbc:InvoiceTypeCode>
+    <cbc:Note>#ADU#Trainer: Herr […]</cbc:Note>
+    <cbc:DocumentCurrencyCode>EUR</cbc:DocumentCurrencyCode>
+    <cbc:BuyerReference>99000000-18188-18</cbc:BuyerReference>
+    <cac:InvoicePeriod>
+        <cbc:StartDate>2015-04-20</cbc:StartDate>
+        <cbc:EndDate>2015-04-24</cbc:EndDate>
+    </cac:InvoicePeriod>
+    <cac:ProjectReference>
+        <cbc:ID>PR456789</cbc:ID>
+    </cac:ProjectReference>
+    <cac:AccountingSupplierParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">seller@email.de</cbc:EndpointID>
+            <cac:PostalAddress>
+                <cbc:StreetName>[Seller address line 1]</cbc:StreetName>
+                <cbc:CityName>[Seller city]</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyTaxScheme>
+                <cbc:CompanyID>DE123456789</cbc:CompanyID>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:PartyTaxScheme>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>[Seller name]</cbc:RegistrationName>
+                <cbc:CompanyID>HRB 123456</cbc:CompanyID>
+                <cbc:CompanyLegalForm>Sitz der Gesellschaft […], Registergericht […], Amtsgericht […]</cbc:CompanyLegalForm>
+            </cac:PartyLegalEntity>
+            <cac:Contact>
+                <cbc:Name>[Seller contact person]</cbc:Name>
+                <cbc:Telephone>+49 123456789</cbc:Telephone>
+                <cbc:ElectronicMail>xxx@schulung.de</cbc:ElectronicMail>
+            </cac:Contact>
+        </cac:Party>
+    </cac:AccountingSupplierParty>
+    <cac:AccountingCustomerParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">buyer@info.de</cbc:EndpointID>
+            <cac:PartyIdentification>
+                <cbc:ID>BI123456</cbc:ID>
+            </cac:PartyIdentification>
+            <cac:PostalAddress>
+                <cbc:StreetName>[Buyer address line 1]</cbc:StreetName>
+                <cbc:CityName>[Buyer city]</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>[Buyer name]</cbc:RegistrationName>
+            </cac:PartyLegalEntity>
+        </cac:Party>
+    </cac:AccountingCustomerParty>
+    <cac:Delivery>
+        <cac:DeliveryLocation>
+            <cac:Address>
+                <cbc:CityName>Schulungsort</cbc:CityName>
+                <cbc:PostalZone>12345</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:Address>
+        </cac:DeliveryLocation>
+        <cac:DeliveryParty>
+            <cac:PartyName>
+                <cbc:Name>Schulungsanbieter</cbc:Name>
+            </cac:PartyName>
+        </cac:DeliveryParty>
+    </cac:Delivery>
+    <cac:PaymentMeans>
+        <cbc:PaymentMeansCode>68</cbc:PaymentMeansCode>
+    </cac:PaymentMeans>
+    <cac:PaymentTerms>
+        <cbc:Note>14 Tage; bitte die Zahlung per PayPal über die angegebene Email-Adresse durchführen</cbc:Note>
+    </cac:PaymentTerms>
+    <cac:TaxTotal>
+        <cbc:TaxAmount currencyID="EUR">1685.3</cbc:TaxAmount>
+        <cac:TaxSubtotal>
+            <cbc:TaxableAmount currencyID="EUR">8870</cbc:TaxableAmount>
+            <cbc:TaxAmount currencyID="EUR">1685.3</cbc:TaxAmount>
+            <cac:TaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:TaxCategory>
+        </cac:TaxSubtotal>
+    </cac:TaxTotal>
+    <cac:LegalMonetaryTotal>
+        <cbc:LineExtensionAmount currencyID="EUR">8870</cbc:LineExtensionAmount>
+        <cbc:TaxExclusiveAmount currencyID="EUR">8870</cbc:TaxExclusiveAmount>
+        <cbc:TaxInclusiveAmount currencyID="EUR">10555.3</cbc:TaxInclusiveAmount>
+        <cbc:PayableAmount currencyID="EUR">10555.3</cbc:PayableAmount>
+    </cac:LegalMonetaryTotal>
+    <cac:InvoiceLine>
+        <cbc:ID>Seminar: […]</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="DAY">5</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">6700</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Seminar</cbc:Name>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">1340</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+    <cac:InvoiceLine>
+        <cbc:ID>Raumkosten Schulungsort</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="DAY">5</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">1500</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Raumkosten</cbc:Name>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">300</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+    <cac:InvoiceLine>
+        <cbc:ID>Reisekostenpauschale</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">5</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">450</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Reisekostenpauschale</cbc:Name>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">90</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+    <cac:InvoiceLine>
+        <cbc:ID>Seminarunterlagen</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="XPP">11</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">220</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Seminarunterlagen</cbc:Name>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>S</cbc:ID>
+                <cbc:Percent>19</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">20</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+</ubl:Invoice>
--- a/tests/inputs/ubl/01.20a-INVOICE_ubl.xml
+++ b/tests/inputs/ubl/01.20a-INVOICE_ubl.xml
@@ -0,0 +1,165 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ubl:Invoice xmlns:ubl="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2"
+  xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2"
+  xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2">
+  <cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</cbc:CustomizationID>
+  <cbc:ProfileID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</cbc:ProfileID>
+  <cbc:ID>1234567890</cbc:ID>
+  <cbc:IssueDate>2021-01-25</cbc:IssueDate>
+  <cbc:DueDate>2021-02-04</cbc:DueDate>
+  <cbc:InvoiceTypeCode>389</cbc:InvoiceTypeCode>
+  <cbc:Note>#REG#Betriebsstätte</cbc:Note>
+  <cbc:DocumentCurrencyCode>EUR</cbc:DocumentCurrencyCode>
+  <cbc:BuyerReference>1234567890-54321-40</cbc:BuyerReference>
+  <cac:OrderReference>
+    <cbc:ID>Bestellung XRechnung</cbc:ID>
+  </cac:OrderReference>
+  <cac:AccountingSupplierParty>
+    <cac:Party>
+      <cbc:EndpointID schemeID="EM">seller@email.de</cbc:EndpointID>
+      <cac:PostalAddress>
+        <cbc:StreetName>[Seller street]</cbc:StreetName>
+        <cbc:CityName>[Seller city]</cbc:CityName>
+        <cbc:PostalZone>12345</cbc:PostalZone>
+        <cac:Country>
+          <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+        </cac:Country>
+      </cac:PostalAddress>
+      <cac:PartyTaxScheme>
+        <cbc:CompanyID>DE123456789</cbc:CompanyID>
+        <cac:TaxScheme>
+          <cbc:ID>VAT</cbc:ID>
+        </cac:TaxScheme>
+      </cac:PartyTaxScheme>
+      <cac:PartyLegalEntity>
+        <cbc:RegistrationName>Betriebsstätte</cbc:RegistrationName>
+      </cac:PartyLegalEntity>
+      <cac:Contact>
+        <cbc:Name>Reimund Kann</cbc:Name>
+        <cbc:Telephone>0123456789</cbc:Telephone>
+        <cbc:ElectronicMail>test@test.de</cbc:ElectronicMail>
+      </cac:Contact>
+    </cac:Party>
+  </cac:AccountingSupplierParty>
+  <cac:AccountingCustomerParty>
+    <cac:Party>
+      <cbc:EndpointID schemeID="EM">buyer@info.de</cbc:EndpointID>
+      <cac:PostalAddress>
+        <cbc:StreetName>[Street]</cbc:StreetName>
+        <cbc:CityName>[City]</cbc:CityName>
+        <cbc:PostalZone>12345</cbc:PostalZone>
+        <cac:Country>
+          <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+        </cac:Country>
+      </cac:PostalAddress>
+      <cac:PartyTaxScheme>
+        <cbc:CompanyID>DE987654321</cbc:CompanyID>
+        <cac:TaxScheme>
+          <cbc:ID>VAT</cbc:ID>
+        </cac:TaxScheme>
+      </cac:PartyTaxScheme>
+      <cac:PartyLegalEntity>
+        <cbc:RegistrationName>Kunde 1</cbc:RegistrationName>
+      </cac:PartyLegalEntity>
+    </cac:Party>
+  </cac:AccountingCustomerParty>
+  <cac:Delivery>
+    <cbc:ActualDeliveryDate>2021-01-25</cbc:ActualDeliveryDate>
+    <cac:DeliveryLocation>
+      <cac:Address>
+        <cbc:StreetName>[Street]</cbc:StreetName>
+        <cbc:CityName>[City]</cbc:CityName>
+        <cbc:PostalZone>54321</cbc:PostalZone>
+        <cac:Country>
+          <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+        </cac:Country>
+      </cac:Address>
+    </cac:DeliveryLocation>
+    <cac:DeliveryParty>
+      <cac:PartyName>
+        <cbc:Name>[ShipToTradeParty]</cbc:Name>
+      </cac:PartyName>
+    </cac:DeliveryParty>
+  </cac:Delivery>
+  <cac:PaymentMeans>
+    <cbc:PaymentMeansCode name="Bank transfer">42</cbc:PaymentMeansCode>
+    <cbc:PaymentID>1234567890</cbc:PaymentID>
+    <cac:PayeeFinancialAccount>
+      <cbc:ID>1234 5678 9012 3456 789022</cbc:ID>
+      <cbc:Name>Postbank Düsseldorf</cbc:Name>
+      <cac:FinancialInstitutionBranch>
+        <cbc:ID>PBNKDEFF</cbc:ID>
+      </cac:FinancialInstitutionBranch>
+    </cac:PayeeFinancialAccount>
+  </cac:PaymentMeans>
+  <cac:PaymentTerms>
+    <cbc:Note>Zahlbar unter Angabe der Rechungs- und Debitornummer sofort netto Kasse; fällig zum 04.02.2021 ohne Abzug</cbc:Note>
+  </cac:PaymentTerms>
+  <cac:TaxTotal>
+    <cbc:TaxAmount currencyID="EUR">57.00</cbc:TaxAmount>
+    <cac:TaxSubtotal>
+      <cbc:TaxableAmount currencyID="EUR">300.00</cbc:TaxableAmount>
+      <cbc:TaxAmount currencyID="EUR">57.00</cbc:TaxAmount>
+      <cac:TaxCategory>
+        <cbc:ID>S</cbc:ID>
+        <cbc:Percent>19</cbc:Percent>
+        <cac:TaxScheme>
+          <cbc:ID>VAT</cbc:ID>
+        </cac:TaxScheme>
+      </cac:TaxCategory>
+    </cac:TaxSubtotal>
+  </cac:TaxTotal>
+  <cac:LegalMonetaryTotal>
+    <cbc:LineExtensionAmount currencyID="EUR">300.00</cbc:LineExtensionAmount>
+    <cbc:TaxExclusiveAmount currencyID="EUR">300.00</cbc:TaxExclusiveAmount>
+    <cbc:TaxInclusiveAmount currencyID="EUR">357.00</cbc:TaxInclusiveAmount>
+    <cbc:PayableAmount currencyID="EUR">357.00</cbc:PayableAmount>
+  </cac:LegalMonetaryTotal>
+  <cac:InvoiceLine>
+    <cbc:ID>1</cbc:ID>
+    <cbc:InvoicedQuantity unitCode="C62">-1.0000</cbc:InvoicedQuantity>
+    <cbc:LineExtensionAmount currencyID="EUR">-100.00</cbc:LineExtensionAmount>
+    <cac:InvoicePeriod>
+      <cbc:StartDate>2021-01-25</cbc:StartDate>
+      <cbc:EndDate>2021-01-25</cbc:EndDate>
+    </cac:InvoicePeriod>
+    <cac:Item>
+      <cbc:Name>Behältermiete</cbc:Name>
+      <cac:ClassifiedTaxCategory>
+        <cbc:ID>S</cbc:ID>
+        <cbc:Percent>19</cbc:Percent>
+        <cac:TaxScheme>
+          <cbc:ID>VAT</cbc:ID>
+        </cac:TaxScheme>
+      </cac:ClassifiedTaxCategory>
+    </cac:Item>
+    <cac:Price>
+      <cbc:PriceAmount currencyID="EUR">100</cbc:PriceAmount>
+      <cbc:BaseQuantity unitCode="C62">1</cbc:BaseQuantity>
+    </cac:Price>
+  </cac:InvoiceLine>
+  <cac:InvoiceLine>
+    <cbc:ID>2</cbc:ID>
+    <cbc:InvoicedQuantity unitCode="TNE">4.0000</cbc:InvoicedQuantity>
+    <cbc:LineExtensionAmount currencyID="EUR">400.00</cbc:LineExtensionAmount>
+    <cac:InvoicePeriod>
+      <cbc:StartDate>2021-01-25</cbc:StartDate>
+      <cbc:EndDate>2021-01-25</cbc:EndDate>
+    </cac:InvoicePeriod>
+    <cac:Item>
+      <cbc:Description>Ersatztext bei Entsorgung</cbc:Description>
+      <cbc:Name>Entsorgung</cbc:Name>
+      <cac:ClassifiedTaxCategory>
+        <cbc:ID>S</cbc:ID>
+        <cbc:Percent>19</cbc:Percent>
+        <cac:TaxScheme>
+          <cbc:ID>VAT</cbc:ID>
+        </cac:TaxScheme>
+      </cac:ClassifiedTaxCategory>
+    </cac:Item>
+    <cac:Price>
+      <cbc:PriceAmount currencyID="EUR">100</cbc:PriceAmount>
+      <cbc:BaseQuantity unitCode="TNE">1</cbc:BaseQuantity>
+    </cac:Price>
+  </cac:InvoiceLine>
+</ubl:Invoice>
--- a/tests/inputs/ubl/01.21a-INVOICE_ubl.xml
+++ b/tests/inputs/ubl/01.21a-INVOICE_ubl.xml
@@ -0,0 +1,155 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ubl:Invoice xmlns:ubl="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2"
+    xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2"
+    xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2">
+    <cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:xeinkauf.de:kosit:xrechnung_3.0</cbc:CustomizationID>
+    <cbc:ProfileID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</cbc:ProfileID>
+    <cbc:ID>18383</cbc:ID>
+    <cbc:IssueDate>2020-11-27</cbc:IssueDate>
+    <cbc:DueDate>2020-12-27</cbc:DueDate>
+    <cbc:InvoiceTypeCode>380</cbc:InvoiceTypeCode>
+    <cbc:DocumentCurrencyCode>EUR</cbc:DocumentCurrencyCode>
+    <cbc:BuyerReference>04011000-12349-88</cbc:BuyerReference>
+    <cac:AccountingSupplierParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">seller@email.de</cbc:EndpointID>
+            <cac:PartyIdentification>
+                <cbc:ID>116078</cbc:ID>
+            </cac:PartyIdentification>
+            <cac:PostalAddress>
+                <cbc:StreetName>Musterstrasse 4</cbc:StreetName>
+                <cbc:CityName>Frankfurt am Main</cbc:CityName>
+                <cbc:PostalZone>60388</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyTaxScheme>
+                <cbc:CompanyID>DE 123456789</cbc:CompanyID>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:PartyTaxScheme>
+            <cac:PartyTaxScheme>
+                <cbc:CompanyID>04523149435</cbc:CompanyID>
+                <cac:TaxScheme>
+                    <cbc:ID>???</cbc:ID>
+                </cac:TaxScheme>
+            </cac:PartyTaxScheme>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>Mustermann GmbH</cbc:RegistrationName>
+            </cac:PartyLegalEntity>
+            <cac:Contact>
+                <cbc:Name>Wolfgang Muster</cbc:Name>
+                <cbc:Telephone>069-12335</cbc:Telephone>
+                <cbc:ElectronicMail>mail@muster.de</cbc:ElectronicMail>
+            </cac:Contact>
+        </cac:Party>
+    </cac:AccountingSupplierParty>
+    <cac:AccountingCustomerParty>
+        <cac:Party>
+            <cbc:EndpointID schemeID="EM">buyer@info.de</cbc:EndpointID>
+            <cac:PartyIdentification>
+                <cbc:ID>10099</cbc:ID>
+            </cac:PartyIdentification>
+            <cac:PostalAddress>
+                <cbc:StreetName>Musterweg 1</cbc:StreetName>
+                <cbc:CityName>Berlin</cbc:CityName>
+                <cbc:PostalZone>10115</cbc:PostalZone>
+                <cac:Country>
+                    <cbc:IdentificationCode>DE</cbc:IdentificationCode>
+                </cac:Country>
+            </cac:PostalAddress>
+            <cac:PartyTaxScheme>
+                <cbc:CompanyID>DE152138634</cbc:CompanyID>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:PartyTaxScheme>
+            <cac:PartyTaxScheme>
+                <cbc:CompanyID>04523249415</cbc:CompanyID>
+                <cac:TaxScheme>
+                    <cbc:ID>???</cbc:ID>
+                </cac:TaxScheme>
+            </cac:PartyTaxScheme>
+            <cac:PartyLegalEntity>
+                <cbc:RegistrationName>DB Station&amp;Service AG RB Mitte</cbc:RegistrationName>
+            </cac:PartyLegalEntity>
+            <cac:Contact>
+                <cbc:Name>Klaus Koffer</cbc:Name>
+            </cac:Contact>
+        </cac:Party>
+    </cac:AccountingCustomerParty>
+    <cac:Delivery>
+        <cbc:ActualDeliveryDate>2020-11-23</cbc:ActualDeliveryDate>
+    </cac:Delivery>
+    <cac:PaymentMeans>
+        <cbc:PaymentMeansCode name="Information">1</cbc:PaymentMeansCode>
+        <cac:PayeeFinancialAccount>
+            <!-- dies ist eine nicht existerende aber valide IBAN als test dummy -->
+            <cbc:ID>DE54500800000192632400</cbc:ID>
+            <cbc:Name>Mustermann GmbH</cbc:Name>
+            <cac:FinancialInstitutionBranch>
+                <cbc:ID>DRESDEFFXXX</cbc:ID>
+            </cac:FinancialInstitutionBranch>
+        </cac:PayeeFinancialAccount>
+    </cac:PaymentMeans>
+    <cac:PaymentTerms>
+        <cbc:Note>10 Tage 3% Skonto, 30 Tage netto</cbc:Note>
+    </cac:PaymentTerms>
+    <cac:AllowanceCharge>
+        <cbc:ChargeIndicator>true</cbc:ChargeIndicator>
+        <cbc:AllowanceChargeReason>Lieferpauschale</cbc:AllowanceChargeReason>
+        <cbc:Amount currencyID="EUR">25.00</cbc:Amount>
+        <cac:TaxCategory>
+            <cbc:ID>AE</cbc:ID>
+            <cbc:Percent>0</cbc:Percent>
+            <cac:TaxScheme>
+                <cbc:ID>VAT</cbc:ID>
+            </cac:TaxScheme>
+        </cac:TaxCategory>
+    </cac:AllowanceCharge>
+    <cac:TaxTotal>
+        <cbc:TaxAmount currencyID="EUR">0.00</cbc:TaxAmount>
+        <cac:TaxSubtotal>
+            <cbc:TaxableAmount currencyID="EUR">233.00</cbc:TaxableAmount>
+            <cbc:TaxAmount currencyID="EUR">0.00</cbc:TaxAmount>      
+            <cac:TaxCategory>
+                <cbc:ID>AE</cbc:ID>
+                <cbc:Percent>0</cbc:Percent>
+                <cbc:TaxExemptionReason>Umkehrung der Steuerschuldnerschaft</cbc:TaxExemptionReason>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:TaxCategory>
+        </cac:TaxSubtotal>
+    </cac:TaxTotal>
+    <cac:LegalMonetaryTotal>
+        <cbc:LineExtensionAmount currencyID="EUR">208.00</cbc:LineExtensionAmount>
+        <cbc:TaxExclusiveAmount currencyID="EUR">233.00</cbc:TaxExclusiveAmount>
+        <cbc:TaxInclusiveAmount currencyID="EUR">233.00</cbc:TaxInclusiveAmount>
+        <cbc:ChargeTotalAmount currencyID="EUR">25.00</cbc:ChargeTotalAmount>
+        <cbc:PayableAmount currencyID="EUR">233.00</cbc:PayableAmount>
+    </cac:LegalMonetaryTotal>
+    <cac:InvoiceLine>
+        <cbc:ID>1</cbc:ID>
+        <cbc:InvoicedQuantity unitCode="HUR">4</cbc:InvoicedQuantity>
+        <cbc:LineExtensionAmount currencyID="EUR">208.00</cbc:LineExtensionAmount>
+        <cac:Item>
+            <cbc:Name>Tür Instandsetzung</cbc:Name>
+            <cac:SellersItemIdentification>
+                <cbc:ID>1</cbc:ID>
+            </cac:SellersItemIdentification>
+            <cac:ClassifiedTaxCategory>
+                <cbc:ID>AE</cbc:ID>
+                <cbc:Percent>0</cbc:Percent>
+                <cac:TaxScheme>
+                    <cbc:ID>VAT</cbc:ID>
+                </cac:TaxScheme>
+            </cac:ClassifiedTaxCategory>
+        </cac:Item>
+        <cac:Price>
+            <cbc:PriceAmount currencyID="EUR">52.00</cbc:PriceAmount>
+        </cac:Price>
+    </cac:InvoiceLine>
+</ubl:Invoice>
--- a/tests/inputs/ubl/02.01a-INVOICE_ubl.xml
+++ b/tests/inputs/ubl/02.01a-INVOICE_ubl.xml
--- a/tests/inputs/ubl/02.02a-INVOICE_ubl.xml
+++ b/tests/inputs/ubl/02.02a-INVOICE_ubl.xml
--- a/tests/inputs/ubl/02.03a-INVOICE_ubl.xml
+++ b/tests/inputs/ubl/02.03a-INVOICE_ubl.xml
--- a/tests/inputs/ubl/02.04a-INVOICE_ubl.xml
+++ b/tests/inputs/ubl/02.04a-INVOICE_ubl.xml
--- a/tests/inputs/ubl/02.05a-INVOICE_ubl.xml
+++ b/tests/inputs/ubl/02.05a-INVOICE_ubl.xml
--- a/tests/inputs/ubl/02.06a-INVOICE_ubl.xml
+++ b/tests/inputs/ubl/02.06a-INVOICE_ubl.xml
--- a/tests/inputs/ubl/03.01a-INVOICE_ubl.xml
+++ b/tests/inputs/ubl/03.01a-INVOICE_ubl.xml
--- a/tests/inputs/ubl/03.02a-INVOICE_ubl.xml
+++ b/tests/inputs/ubl/03.02a-INVOICE_ubl.xml
--- a/Show More
+++ b/Show More