Validation rules
BR-50
A credit-transfer payment account is present but its account identifier (IBAN, BT-84) is empty.
- Rule
BR-50— official EN 16931 / XRechnung rule- Severity
- error
- Business term
BT-84— Payment account IBAN- Field in your JSON
invoice.payment.iban- Detected by
- tier 3 — KoSIT validator (authoritative)
- Reachability
- Only reachable when validating your own XML — normbill-generated documents cannot trigger it
The serializer only writes the account group when invoice.payment.iban is set (min. 15 characters), so generated documents never carry an empty BT-84.
How to fix it
Put the IBAN (or other account identifier) into cac:PayeeFinancialAccount/cbc:ID.
BR-50 auf Deutsch — was bedeutet der Fehler?
Ein Überweisungskonto ist angegeben, aber die Kontokennung (IBAN, BT-84) ist leer.
So beheben Sie den Fehler
Tragen Sie die IBAN (oder andere Kontokennung) in cac:PayeeFinancialAccount/cbc:ID ein.
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.