Validation rules

BR-DE-19

The payment account identifier (BT-84) does not look like a valid IBAN — for SEPA credit transfers (means code 58) XRechnung expects one.

Rule: BR-DE-19 — official EN 16931 / XRechnung rule
Severity: warning
Business term: BT-84 — Payment account IBAN
Field in your JSON: invoice.payment.iban
Detected by: tier 1 — normbill pre-flight (also in the playground)
Reachability: Triggerable from your request JSON (generate & validate)

normbill's tier-1 pre-flight already warns on IBANs with a broken checksum (NB-IBAN-CHECKSUM) before the document reaches the validator.

How to fix it

Double-check invoice.payment.iban against your bank details.

BR-DE-19 auf Deutsch — was bedeutet der Fehler?

Die Kontokennung (BT-84) sieht nicht wie eine gültige IBAN aus — bei SEPA-Überweisungen (Code 58) erwartet die XRechnung eine. Der Validator meldet eine Warnung.

So beheben Sie den Fehler

Prüfen Sie invoice.payment.iban gegen Ihre Bankdaten.

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.