EN 16931 validator
Validates electronic invoices in UBL and UN/CEFACT CII against the European norm EN 16931 – with the official CEN validation artefacts 1.3.16, entirely in your browser.
Rules and versions used
Rule set EN 16931, CEN artefacts 1.3.16, as of 13 April 2026
Up to 25 MiB per file and in total for embedded XML files. Validation stops after 30 seconds at most.
Guides
- Electronic credit notes: references, amounts and XML checks
- How to fix an invoice XML validation failure
- UBL or CII: identify an invoice XML file
- VAT and rounding: find an invoice XML total mismatch
- E-invoicing in France 2026–2027: who is affected, when, auto-entrepreneurs too
- EN 16931 explained: the European norm behind every e-invoice format