XRechnung 2.3.0 · UBL
Rules: XRechnung Schematron rules by Koordinierungsstelle für IT-Standards (KoSIT) · Apache-2.0
[UBL-CR-673]-A UBL invoice shall not include an AdditionalDocumentReference simultaneously referring an Invoice Object Identifier and an Document Description
not(//cac:AdditionalDocumentReference[cbc:DocumentTypeCode = '130']/cbc:DocumentDescription)