PdfProcessing: Add support for embedding of ZUGFeRD invoices
ZUGFeRD (acronym for Zentraler User Guide des Forums elektronische Rechnung Deutschland) is a specification for the electronic invoice format of the same name.
This task is already resolved as the feature was introduced with the Q1 2024 release. If you are referencing any version since then you should have access to the functionality.
However, ZUGFeRD/X-Rechnung is a German standard, there is also an equivalent in France (Factur-X) and both are based on the international UN/CEFACT Standard „Cross Industry Invoice (CII)“ and the ISO standard PDF/A-3. Here is the related law/text by the EU: https://eur-lex.europa.eu/eli/dir/2014/55/oj?locale=en