Validation rules for e-invoices

Your e-invoice was rejected with a message like "[BR-DE-15]"? Here you find the official message for every XRechnung, ZUGFeRD/Factur-X and EN 16931 validation rule and, where available, a plain explanation with a solution.

Validation basis: XRechnung 3.0.2 · ZUGFeRD 2.4 (EN 16931) · KoSIT configuration of Aug. 31, 2026 · Deadlines checked on Oct. 30, 2026

Rule ID or keyword

Family All families BR – EN 16931 business rules BR-AE – VAT: reverse charge (AE) BR-AF – IGIC – Canary Islands (L) BR-AG – IPSI – Ceuta and Melilla (M) BR-B – Split payment (B) BR-CL – Code lists BR-CO – Calculations and dependencies BR-DE – XRechnung national rules BR-DE-CVD BR-DE-TMP BR-DEC – Decimal places BR-DEX – XRechnung extension BR-E – VAT: exempt (E) BR-FX-EN BR-G – VAT: export outside the EU (G) BR-IC – VAT: intra-community supply (K) BR-O – Not subject to VAT (O) BR-S – VAT: standard rate (S) BR-TMP BR-TMP-CVD BR-Z – VAT: zero rate (Z) CII-DT – CII data types CII-SR – CII syntax rules FX-SCH-A PEPPOL-EN16931 – Peppol rules UBL-CR – UBL restrictions UBL-DT – UBL data types UBL-SR – UBL syntax rules

Kind All kinds Business rule Calculation VAT category Code list National rule Syntax

Search