# F-LIB022

Source: https://xmlvalid.com/rules/F-LIB022

> PartyName/Name is mandatory if PartyIdentification/ID is not found

- 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: `(not(cac:PartyIdentification) or cac:PartyIdentification/cbc:ID = '') and (not(cac:PartyName) or cac:PartyName/cbc:Name = '')`

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