Validation rules

BR-11

The buyer address has no country code (BT-55).

Rule: BR-11 — official EN 16931 / XRechnung rule
Severity: error
Business term: BT-55 — Buyer country
Field in your JSON: invoice.buyer.address.country
Detected by: tier 3 — KoSIT validator (authoritative)
Reachability: Only reachable when validating your own XML — normbill-generated documents cannot trigger it

invoice.buyer.address.country is required by the request schema.

How to fix it

Add cac:Country/cbc:IdentificationCode with an ISO 3166-1 alpha-2 code to the customer postal address.

BR-11 auf Deutsch — was bedeutet der Fehler?

In der Käuferanschrift fehlt der Ländercode (BT-55).

So beheben Sie den Fehler

Ergänzen Sie cac:Country/cbc:IdentificationCode mit einem ISO-3166-1-Alpha-2-Code in der Käuferanschrift.

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.