# F-LIB028

Source: https://xmlvalid.com/rules/F-LIB028

> When ID is used under Address the attribute schemeID is used to give an addressregister

- 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 and not(string-length(cbc:ID/@schemeID) > 0)`

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