warningEN 16931syntax binding ruleUBL
A UBL invoice should not include the InvoiceLine Item Price AllowanceCharge AllowanceChargeReason
The element 'InvoiceLine Item Price AllowanceCharge AllowanceChargeReason' is present, but it carries no meaning in the EN 16931 semantic model, so a receiver is free to ignore or reject it.
Remove 'InvoiceLine Item Price AllowanceCharge AllowanceChargeReason' from the document. Nothing in EN 16931 maps to it - it is almost always left over from a generic UBL template. Reported as a warning.
UBL — context /ubl:Invoice | /cn:CreditNote
not((cac:InvoiceLine|cac:CreditNoteLine)/cac:Price/cac:AllowanceCharge/cbc:AllowanceChargeReason)