[ibr-co-26]-In order for the buyer to automatically identify a supplier, the Seller identifier (ibt-029), the Seller legal registration identifier (ibt-030) and/or the Seller Tax identifier (ibt-031) MUST be present.
ibr-co-26
cac:AccountingSupplierParty/cac:Party
exists(cac:PartyTaxScheme/cbc:CompanyID) or exists(cac:PartyIdentification/cbc:ID) or exists(cac:PartyLegalEntity/cbc:CompanyID)