fatalEN 16931syntax binding ruleUBLBT-17
An Invoice shall contain maximum one Originator document reference identifier (BT-17).
More than one originator document reference (BT-17).
Keep one tender or lot reference at document level.
UBL — context /ubl:Invoice | /cn:CreditNote
count(cac:OriginatorDocumentReference/cbc:ID) <= 1