# F-LIB184

Source: https://xmlvalid.com/rules/F-LIB184

> schemeID = DK:CVR, ID must be a valid CVR number (like 'DK12345678', value found: '…')

- Level: error
- Rule sets: OIOUBL 2.1 Invoice rules (Denmark) 1.17.2, OIOUBL 2.1 Credit Note rules (Denmark) 1.17.2, OIOUBL 2.1 Reminder rules (Denmark) 1.17.2
- Test: `(cbc:ID/@schemeID = 'DK:CVR') and (string-length(cbc:ID) != 10 or substring(cbc:ID, 1, 2) != 'DK')`

Validate a document against these rules: https://xmlvalid.com/validate