Problems·HTTP 422

unsupported-document

The document is not a Peppol BIS Billing 3.0 invoice or credit note.

What it means

The XML is well-formed, but it is not a UBL Invoice or CreditNote that declares Peppol BIS Billing 3.0. detail says what was found instead.

What to do

Check the root element and cbc:CustomizationID. Other formats, such as CII or other Peppol specifications, are not supported yet.

Example

Sent as application/problem+json (RFC 9457). Branch on type, which is stable. Never branch on title or detail, which are prose and may change.

{  "type": "https://www.einvoicing.dev/problems/unsupported-document",  "title": "The document is not a Peppol BIS Billing 3.0 invoice or credit note.",  "status": 422,  "detail": "…"}