Validation rules

BR-CO-24

An invoice line charge (BG-28) carries neither a reason text (BT-144) nor a reason code (BT-145) — at least one is required.

Rule: BR-CO-24 — official EN 16931 / XRechnung rule
Severity: error
Business term: BT-144
Detected by: tier 1 — normbill pre-flight (also in the playground)
Reachability: Triggerable from your request JSON (generate & validate)

normbill's pre-flight reports the equivalent finding as BR-44 at tier 1.

How to fix it

Set the line charge's reason or a UNCL 7161 reason_code.

BR-CO-24 auf Deutsch — was bedeutet der Fehler?

Ein Positionszuschlag (BG-28) trägt weder einen Grundtext (BT-144) noch einen Grundcode (BT-145) — mindestens eines ist Pflicht.

So beheben Sie den Fehler

Setzen Sie reason des Positionszuschlags oder einen UNCL-7161-reason_code. normbill meldet denselben Befund bereits vorab als BR-44.

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.