Factur-X Validator API

Factur-X (also known as ZUGFeRD in Germany) is a hybrid format: a PDF/A-3 with embedded UBL/CII XML. It's mandated by the French B2B e-invoicing reform starting September 2026 and is one of the two formats Germany's 2025 mandate accepts (alongside XRechnung).

France B2B mandate timeline

• · Sept 1, 2026 — large enterprises must send e-invoices (Factur-X or UBL via Chorus Pro / PPF)
• · Sept 1, 2027 — mid-size and small businesses must send
• · All B2B issuers must receive e-invoices from Sept 1, 2026

What we validate

• · Factur-X 1.07.2 profile compliance (BASIC, BASIC WL, EN 16931, EXTENDED)
• · Embedded XML against UBL or CII schemas
• · EN16931 schematron rules
• · PDF/A-3 conformance
• · Embedded XML matches PDF metadata (cross-document consistency)

The validator is phive 4.0.4, which Helger maintains in coordination with the Factur-X working group (FNFE-MPE in France, FeRD in Germany).