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EN 16931 and XRechnung rule library

Find an invoice rule by code, business term or wording. Select a tested repair guide or read the pinned official rule text.

1646 rules in the fixed package; 59 tested repair guides.

The index also includes syntax restrictions and code-list checks. Text comes from the fixed EN 16931 1.3.16 and XRechnung 3.0.2 / national 2.6.0 artefacts. Rules without a reproduced fixture stay in this index. Licences and complete sources.