Validation rules

UBL-SR-24

Delivery information (BG-13) appears more than once — only one cac:Delivery element is allowed.

Rule: UBL-SR-24 — 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 cac:Delivery, carrying invoice.delivery_date (BT-72).

How to fix it

Keep a single cac:Delivery. Through normbill, invoice.delivery_date produces exactly one Delivery element.

UBL-SR-24 auf Deutsch — was bedeutet der Fehler?

Der KoSIT-Validator lehnt die Rechnung ab, weil die Lieferinformationen (BG-13) mehrfach vorkommen — nur ein cac:Delivery-Element ist erlaubt.

So beheben Sie den Fehler

Behalten Sie genau ein cac:Delivery. Über normbill erzeugt invoice.delivery_date genau ein Delivery-Element.

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.