XRechnung Validator API

XRechnung is mandatory for B2G e-invoicing in Germany since November 2020 and for B2B since January 2025. Validate any XRechnung 2.x invoice via our REST API before submission to a public-sector payee or your customer's Peppol Access Point.

German B2B mandate timeline

• · Jan 1, 2025 — all B2B issuers must accept e-invoices (XRechnung or ZUGFeRD/Factur-X)
• · Jan 1, 2027 — all B2B issuers with revenue >€800K must send e-invoices
• · Jan 1, 2028 — full B2B mandate, all sizes

What we validate

• · XRechnung 2.3.1 schematron rules (BR-DE-*, BR-CO-*)
• · UBL 2.1 syntax validation
• · Underlying EN16931 business rules
• · Leitweg-ID validation for B2G recipients
• · German VAT category code conformance

We use phive (Helger) — the same validator used by the German federal government's KoSIT and major German ERPs. Same accuracy, modern API.