PEPPOL-EN16931-CL001
Mime code must be according to subset of IANA code list.
What does this rule mean?
The attachment MIME code is not from the IANA subset.
Peppol narrows the EN 16931 code lists further so every receiver on the network can resolve the value without a prior agreement.
Official rule message (standard)
Mime code must be according to subset of IANA code list.
Where the rule applies
Syntax: CII · UBL
The same rule, expressed twice: UBL and CII name the same fields with different paths. Running a CII file against the UBL rules is why you get errors that mean nothing.
UBL
cbc:EmbeddedDocumentBinaryObject[@mimeCode]
CII
ram:AttachmentBinaryObject[@mimeCode]
Technical test
The rule passes when this Schematron expression holds true:
some $code in $MIMECODE
satisfies @mimeCode = $codeHow to fix it
A missing or incorrect business entry only you can supply. Add or correct it, then re-check.
Use a permitted type (PDF, PNG, JPEG, CSV, XLSX, ODS).
Correct the affected entry in your XML, then re-check the invoice. Validation runs locally in your browser — your file never leaves your machine.
Check an e-invoice here
Drop an XML or ZUGFeRD PDF file here. Validation runs locally in your browser against EN 16931 — your file never leaves your machine.