Validation rules

BR-CL-05 — EN 16931 rule

The VAT accounting currency code (BT-6) is not part of ISO 4217.

Rule: BR-CL-05 — official EN 16931 / XRechnung rule
Severity: error
Detected by: tier 3 — KoSIT validator (authoritative)
Reachability: Not expressible through the normbill invoice model — documented for completeness

The invoice model has no VAT accounting currency (BT-6); generated documents never contain cbc:TaxCurrencyCode.

How to fix it

Correct the cbc:TaxCurrencyCode value in your XML, or remove the element if you do not settle VAT in a second currency.

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

Die Währung der Umsatzsteuerabrechnung (BT-6, cbc:TaxCurrencyCode) ist kein gültiger ISO-4217-Code. Das normbill-Datenmodell kennt kein BT-6 — die Regel betrifft nur eigenes XML, das an /v1/invoices/validate übermittelt wird.

So beheben Sie den Fehler

Korrigieren Sie den Wert von cbc:TaxCurrencyCode in Ihrem XML — oder entfernen Sie das Element, wenn Sie die Umsatzsteuer nicht in einer zweiten Währung abrechnen.

Related rules

BR-CL-04 — The invoice currency code (BT-5) is not part of ISO 4217.
BR-CL-06 — The VAT point date code (BT-8) is not one of the UNTDID 2005 codes EN 16931 permits (3, 35 or 432).
BR-CL-03 — An amount carries a currencyID attribute that is not an ISO 4217 currency code.
BR-CL-07 — The scheme of an invoiced-object identifier (BT-18 schemeID) is not a UNTDID 1153 code.
BR-CL-08 — An invoice note (BT-22) starts with a #...# prefix whose subject code (BT-21) is not part of UNTDID 4451.
BR-CL-01 — Type code 381 (credit note) is not allowed in the UBL Invoice syntax — UNTDID 1001 lists 381 only for UBL…

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.