XRechnung 2.1.0 · UBLStored validation assertion
UBL-CR-035
XRechnung 2.1.0 · UBL
warningschema
Original rule text
[UBL-CR-035]-A UBL invoice should not include the BillingReference ValidityPeriod
not(cac:BillingReference/cac:InvoiceDocumentReference/cac:ValidityPeriod)