[UBL-CR-640]-A UBL invoice should not include the InvoiceLine Item Price AllowanceCharge PerUnitAmount
UBL-CR-640pxs-taxdata:TaxData/pxs-taxdata:ReportedTransaction/pxs-taxdata:ReportedDocumentnot(pxs-taxdata:DocumentLine/cac:Price/cac:AllowanceCharge/cbc:PerUnitAmount)