Validation rules

UBL-SR-29

The SEPA creditor identifier (BT-90) appears more than once — only one PartyIdentification/ID with schemeID 'SEPA' is allowed in the whole document.

Rule: UBL-SR-29 — official EN 16931 / XRechnung rule
Severity: error
Detected by: tier 3 — KoSIT validator (authoritative)
Reachability: Only reachable when validating your own XML — normbill-generated documents cannot trigger it

The serializer emits at most one schemeID SEPA PartyIdentification, from invoice.payment.creditor_id.

How to fix it

Keep a single party identification with schemeID SEPA (the bank-assigned creditor reference).

UBL-SR-29 auf Deutsch — was bedeutet der Fehler?

Der KoSIT-Validator lehnt die Rechnung ab, weil die SEPA-Gläubiger-ID (BT-90) mehrfach vorkommt — im gesamten Dokument ist nur eine PartyIdentification/ID mit schemeID „SEPA“ erlaubt.

So beheben Sie den Fehler

Behalten Sie genau eine Parteikennung mit schemeID SEPA (die Gläubiger-ID der Bank).

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.