fatalEN 16931syntax binding ruleUBL
Seller trader name shall occur maximum once
'Seller trader name' appears more than once, and this profile allows it at most once.
Keep the single correct 'Seller trader name' 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 /ubl:Invoice | /cn:CreditNote
(count(cac:AccountingSupplierParty/cac:Party/cac:PartyName/cbc:Name) <= 1)