Validation rules

BR-TMP-2

An external document location (BT-124) must be an absolute URL with a valid scheme (announced to become an error in a future XRechnung release).

Rule: BR-TMP-2 — official EN 16931 / XRechnung rule
Severity: warning
Business term: BT-124 — Supporting document location
Field in your JSON: invoice.supporting_documents[*].url

How to fix it

Use an absolute http(s) URL in invoice.supporting_documents[i].url.

BR-TMP-2 auf Deutsch — was bedeutet der Fehler?

Eine externe Dokumentenadresse (BT-124) muss eine absolute URL mit gültigem Schema sein (laut Ankündigung künftig ein Fehler).

So beheben Sie den Fehler

Verwenden Sie eine absolute http(s)-URL in invoice.supporting_documents[i].url.

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.