[UBL-CR-479]-A UBL invoice should not include the AllowanceCharge TaxCategory PerUnitAmount
UBL-CR-479
pxs-taxdata:TaxData/pxs-taxdata:ReportedTransaction/pxs-taxdata:ReportedDocument
not(cac:AllowanceCharge/cac:TaxCategory/cbc:PerUnitAmount)