# F-LIB246

Source: https://xmlvalid.com/rules/F-LIB246

> when ID equals 'Factoring', Note element is mandatory (factoring note)

- 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 = 'Factoring' and not(cbc:Note != '')`

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