XRechnung 2.4.0 · UBLStored validation assertion
UBL-CR-590
XRechnung 2.4.0 · UBL
warningschema
Original rule text
[UBL-CR-590]-A UBL invoice should not include the InvoiceLine Item ItemSpecificationDocumentReference
not((cac:InvoiceLine|cac:CreditNoteLine)/cac:Item/cac:ItemSpecificationDocumentReference)