# PEPPOL-T19-B00501

Source: https://xmlvalid.com/rules/PEPPOL-T19-B00501

> Value MUST be part of code list 'Catalogue Action code, header level (OpenPeppol)'.

- Level: error
- Rule sets: Peppol Catalogue rules 3.5
- Context: `/ubl:Catalogue/cbc:ActionCode`
- Test: `(some $code in $clActionCode_header satisfies $code = normalize-space(text()))`

Validate a document against these rules: https://xmlvalid.com/validate