| profile | result | warnings | rules it adds |
| EN 16931 (core) | passes | 0 warn | — |
| Peppol BIS Billing 3.0 (+ national rules) | passes | 0 warn | — |
| XRechnung 3.0.2 (Germany) | 2 fatal | 1 warn | BR-DE-15, BR-DE-2 |
A PDF only works if it is Factur-X / ZUGFeRD — a PDF with the invoice XML attached inside it. A printed or scanned PDF has nothing in it to check. If you have the XML as a separate file, upload that.
No invoice to hand? Try a sample with a VAT rounding error or the same invoice against Peppol rules, or against XRechnung (Germany) — or see an invoice that is valid EU-wide and still rejected in Germany. Or grab a sample invoice to test your own code with.
Every EN 16931 and Peppol BIS rule has its own reference page with the cause and the fix.
Factur-X and ZUGFeRD PDFs are unpacked and the XML checked — plus the container itself: /AF, /AFRelationship and the XMP profile declaration, which almost nothing else looks at.
An invoice can be valid EN 16931 and still bounce off Peppol or XRechnung. The Peppol check adds the national rules for DE, DK, GR, IS, IT, NL, NO and SE automatically, from the seller's country.
Passes 1,142 of 1,142 assertions in CEN's own EN 16931 test suite — the same corpus the standard is validated with.
Country-by-country mandate deadlines — Belgium, Poland, France, Germany, Slovenia and the rest.