Validation rules
BR-AG-02
The invoice has IPSI (M) lines, which require the seller VAT identifier (BT-31) or tax registration number (BT-32).
- Rule
BR-AG-02— official 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 or invoice.seller.tax_number.
BR-AG-02 auf Deutsch — was bedeutet der Fehler?
Die Rechnung enthält IPSI-Positionen (Kategorie M); dafür ist die USt-IdNr. (BT-31) oder Steuernummer (BT-32) des Verkäufers Pflicht.
So beheben Sie den Fehler
Setzen Sie invoice.seller.vat_id oder invoice.seller.tax_number.
Official sources
- XRechnung specification (KoSIT / xeinkauf.de)
- KoSIT validator on GitHub and the XRechnung validator configuration
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.