Validation rules

UBL-SR-22

The tax representative name (BT-62) appears more than once — cac:TaxRepresentativeParty may carry only one PartyName/Name.

Rule: UBL-SR-22 — 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 normbill invoice model has no tax representative (BG-11); generated XML never contains cac:TaxRepresentativeParty.

How to fix it

Keep a single cac:PartyName/cbc:Name inside the tax representative party.

UBL-SR-22 auf Deutsch — was bedeutet der Fehler?

Der KoSIT-Validator lehnt die Rechnung ab, weil der Name des Steuervertreters (BT-62) mehrfach vorkommt — cac:TaxRepresentativeParty darf nur einen PartyName/Name tragen.

So beheben Sie den Fehler

Behalten Sie genau einen cac:PartyName/cbc:Name beim Steuervertreter.

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.