[UBL-CR-601]-A UBL invoice should not include the InvoiceLine Item ClassifiedTaxCategory TaxExemptionReason
UBL-CR-601
/ubl:Invoice | /cn:CreditNote
not((cac:InvoiceLine|cac:CreditNoteLine)/cac:Item/cac:ClassifiedTaxCategory/cbc:TaxExemptionReason)