XRechnung 2.3.0 · UBLStored validation assertion
UBL-CR-666
XRechnung 2.3.0 · UBL
fatalschema
Original rule text
[UBL-CR-666]-A UBL invoice shall not include an AdditionalDocumentReference simultaneously referring an Invoice Object Identifier and an Attachment
not(//cac:AdditionalDocumentReference[cbc:DocumentTypeCode = '130']/cac:Attachment)