Validation rules

BR-AG-05

An IPSI (M) line must have a VAT rate (BT-152) of 0 or greater.

Rule
BR-AG-05official EN 16931 / XRechnung rule
Severity
error
Business term
BT-152 — Line VAT rate
Field in your JSON
invoice.lines[*].vat
Detected by
tier 3 — KoSIT validator (authoritative)
Reachability
Only reachable when validating your own XML — normbill-generated documents cannot trigger it

The request schema requires line.vat >= 0, so generated documents always satisfy this.

How to fix it

Set a non-negative Percent on the line's ClassifiedTaxCategory in your XML.

BR-AG-05 auf Deutsch — was bedeutet der Fehler?

Eine IPSI-Position (Kategorie M) muss einen Steuersatz (BT-152) von 0 oder größer tragen. Das Anfrage-Schema erzwingt line.vat >= 0, generierte Dokumente erfüllen die Regel daher immer; die Meldung betrifft extern erzeugtes XML.

So beheben Sie den Fehler

Setzen Sie in Ihrem XML ein nicht-negatives Percent an der ClassifiedTaxCategory der Position.

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.

Spotted something?

Bug, missing feature, wrong validation result — tell us. The page you're on is attached automatically; email optional.