# F-CRN204

Source: https://xmlvalid.com/rules/F-CRN204

> The documenttype does not match an OIOUBL CreditNote and can not be validated by this schematron.

- Level: error
- Rule sets: OIOUBL 2.1 Credit Note rules (Denmark) 1.17.2
- Context: `/`
- Test: `namespace-uri(*) = 'urn:oasis:names:specification:ubl:schema:xsd:CreditNote-2'`

> cac:CertificateTypeCode must contain a value.

- Level: error
- Rule sets: OIOUBL 2.1 Credit Note rules (Denmark) 1.17.2
- Context: `doc:CreditNote/cac:CreditNoteLine/cac:Item/cac:Certificate/cbc:CertificateTypeCode`
- Test: `normalize-space(.) != ''`

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