Validation rules

BR-DE-1 — XRechnung rule

Payment instructions (BG-16) are missing. XRechnung requires them.

Rule: BR-DE-1 — official EN 16931 / XRechnung rule
Severity: error
Business term: BT-81 — Payment means code
Field in your JSON: invoice.payment.means_code

How to fix it

Add invoice.payment — for SEPA transfers an IBAN is enough; for SEPA direct debit set means_code 59 with mandate_id, creditor_id, and debited_iban.

BR-DE-1 auf Deutsch — was bedeutet der Fehler?

Die Rechnung enthält keine Zahlungsangaben (Gruppe BG-16). Die XRechnung schreibt Informationen zur Zahlung verbindlich vor — ohne sie lehnt der KoSIT-Validator das Dokument ab.

So beheben Sie den Fehler

Ergänzen Sie invoice.payment — für eine SEPA-Überweisung genügt die IBAN; für SEPA-Lastschrift setzen Sie means_code 59 mit mandate_id, creditor_id und debited_iban.

Dieselbe Regel, gemappt auf Ihr JSON, kommt von der XRechnung API.

Related rules

BR-DE-25-a — Payment means is a SEPA direct debit (code 59) but direct-debit information (BG-19) is missing.
NB-PAYMENT-MEANS-UNSUPPORTED — Card-payment means codes (48/54/55) need card information (BG-18) that normbill cannot express yet — KoSIT…
BR-CL-16 — The payment means code (BT-81) is not a UNTDID 4461 code.
BR-49 — Payment instructions (BG-16) are present but the payment means type code (BT-81) is missing.
BR-DE-24-a — The payment means is a card payment (code 48, 54 or 55), so card information (BG-18) is required.
UBL-SR-27 — A cac:PaymentMeans carries more than one cbc:PaymentMeansCode (BT-81) — each payment means states exactly…

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.

Generate a valid XRechnung from JSON with the XRechnung API — the 422 names this field instead of the Schematron code.