# F-LIB239

Source: https://xmlvalid.com/rules/F-LIB239

> Use either ContractTypeCode or ContractType

- 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: `cac:ForeignExchangeContract/cbc:ContractTypeCode and cac:ForeignExchangeContract/cbc:ContractType`

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