/v1/validate/xrechnungXRechnung 3.0 KoSIT validator including Leitweg-ID and BR-DE.
| Name | Type | Required | Description |
|---|---|---|---|
| X-API-Key | string | yes | Your workspace secret. |
| Name | Type | Required | Description |
|---|---|---|---|
| file | binary | yes | UBL or CII XML. |
Errors use application/problem+json with type, title, status, detail, errorCode, and optional invalid-params for Schematron field failures.