Message

Danish organization number (CVR) MUST be stated in the correct format.

Context
cbc:EndpointID[@schemeID = '0184'] | cac:PartyIdentification/cbc:ID[@schemeID = '0184'] | cbc:CompanyID[@schemeID = '0184']
Test
(string-length(string()) = 10 and substring(string(), 1, 2) = 'DK' and string-length(translate(substring(string(), 3, 8), '1234567890', '')) = 0) or (string-length(string()) = 8) and (string-length(translate(substring(string(), 1, 8),'1234567890', '')) = 0)
Usage
/ ubl:Invoice / cac:AccountingSupplierParty / cac:Party / cbc:EndpointID
/ ubl:Invoice / cac:AccountingSupplierParty / cac:Party / cac:PartyIdentification / cbc:ID
/ ubl:Invoice / cac:AccountingSupplierParty / cac:Party / cac:PartyTaxScheme / cbc:CompanyID
/ ubl:Invoice / cac:AccountingCustomerParty / cac:Party / cbc:EndpointID
/ ubl:Invoice / cac:AccountingCustomerParty / cac:Party / cac:PartyIdentification / cbc:ID
/ ubl:Invoice / cac:AccountingCustomerParty / cac:Party / cac:PartyTaxScheme / cbc:CompanyID
/ ubl:CreditNote / cac:AccountingSupplierParty / cac:Party / cbc:EndpointID
/ ubl:CreditNote / cac:AccountingSupplierParty / cac:Party / cac:PartyIdentification / cbc:ID
/ ubl:CreditNote / cac:AccountingSupplierParty / cac:Party / cac:PartyTaxScheme / cbc:CompanyID
/ ubl:CreditNote / cac:AccountingCustomerParty / cac:Party / cbc:EndpointID
/ ubl:CreditNote / cac:AccountingCustomerParty / cac:Party / cac:PartyIdentification / cbc:ID
/ ubl:CreditNote / cac:AccountingCustomerParty / cac:Party / cac:PartyTaxScheme / cbc:CompanyID