# F-LIB149

Source: https://xmlvalid.com/rules/F-LIB149

> PaymentMeansCode = 50, InstructionID must be no more than 16 characters

- 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:PaymentMeansCode = '50') and string-length(cbc:InstructionID) > 16`

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