# F-LIB156

Source: https://xmlvalid.com/rules/F-LIB156

> PaymentMeansCode = 93, InstructionID must be equal to 15 characters (when PaymentID equals 71)

- 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 = '93') and cbc:PaymentID = '71' and string-length(cbc:InstructionID) != 15`

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