Validation rules

BR-G-04

A document-level charge uses VAT category G (export outside the EU), which requires the seller VAT identifier (BT-31); the tax registration number (BT-32) is not accepted here.

Rule
BR-G-04official EN 16931 / XRechnung rule
Severity
error
Business term
BT-31 — Seller VAT identifier
Field in your JSON
invoice.seller.vat_id
Detected by
tier 3 — KoSIT validator (authoritative)
Reachability
Triggerable from your request JSON (generate & validate)

How to fix it

Set invoice.seller.vat_id.

BR-G-04 auf Deutsch — was bedeutet der Fehler?

Ein Zuschlag auf Dokumentebene verwendet die Kategorie G (Ausfuhr); dafür ist die USt-IdNr. des Verkäufers (BT-31) Pflicht — die Steuernummer (BT-32) genügt hier nicht.

So beheben Sie den Fehler

Setzen Sie invoice.seller.vat_id.

Official sources

Every 422 from the API lists the rule id, the path in your request JSON, a plain-language message and a suggested fix — see the docs overview for the report format.

Or try it live: drop any XRechnung XML on the free validator — same KoSIT-backed report, no account.

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