Message

Value MUST be part of code list 'Document name code, full list (UNCL1001)' or 'Image code (openPEPPOL)'.

Context
/ubl:Catalogue/cac:CatalogueLine/cac:Item/cac:ItemSpecificationDocumentReference/cbc:DocumentTypeCode
Test
(some $code in $clUNCL1001 satisfies $code = normalize-space(text())) or (some $code in $clImage satisfies $code = normalize-space(text()))
Code lists
Document name code, full list (UNCL1001), Image code (openPEPPOL)
Usage
/ ubl:Catalogue / cac:CatalogueLine / cac:Item / cac:ItemSpecificationDocumentReference / cbc:DocumentTypeCode