[ibr-172-ae]-Authority name (BTAE-12) MUST be there when the value in Seller legal registration identifier type (BTAE-15) is Commercial/Trade license.
ibr-172-ae
cac:AccountingSupplierParty/cac:Party
(cac:PartyLegalEntity/cbc:CompanyID/@schemeAgencyID = "TL" and (cac:PartyLegalEntity/cbc:CompanyID/@schemeAgencyName)) or not(cac:PartyLegalEntity/cbc:CompanyID/@schemeAgencyID = "TL")