fatalEN 16931syntax binding ruleUBL
Supporting document description shall occur maximum once
'Supporting document description' appears more than once, and this profile allows it at most once.
Keep the single correct 'Supporting document description' and delete the rest. Repeating an element that the semantic model treats as singular is usually a serialiser writing every value it has instead of choosing one.
UBL — context cac:AdditionalDocumentReference
(count(cbc:DocumentDescription) <= 1)