EN 16931 validator API
EN 16931 is the EU semantic standard underpinning the 2030 ViDA mandate.
EN 16931 defines the semantic data model and business rules for a compliant European electronic invoice. Member-state formats (XRechnung, Factur-X, Peppol BIS, FatturaPA and others) are profiles or syntax bindings built on top of it.
Our API runs the full official CEN Schematron over your UBL 2.1 document and reports every failed assertion — presence rules, VAT category rules and calculation rules — so you can fix issues before submission rather than after rejection.
Validate EN 16931 now
Paste an invoice into the live playground — no signup — or get a free API key to integrate it.