For Danish Suppliers it is mandatory to specify schemeID as "0184" (DK CVR-number) when PartyLegalEntity/CompanyID is used for AccountingSupplierParty
ubl-creditnote:CreditNote[$DKSupplierCountry = 'DK'] | ubl-invoice:Invoice[$DKSupplierCountry = 'DK']
not(((boolean(cac:AccountingSupplierParty/cac:Party/cac:PartyLegalEntity/cbc:CompanyID)) and (normalize-space(cac:AccountingSupplierParty/cac:Party/cac:PartyLegalEntity/cbc:CompanyID/@schemeID) != '0184')) )