Danish suppliers MUST provide legal entity (CVR-number)
ubl-creditnote:CreditNote[$DKSupplierCountry = 'DK'] | ubl-invoice:Invoice[$DKSupplierCountry = 'DK']
(normalize-space(cac:AccountingSupplierParty/cac:Party/cac:PartyLegalEntity/cbc:CompanyID/text()) != '')