# F-CRN022

Source: https://xmlvalid.com/rules/F-CRN022

> Invalid OrderReference/ID. Must contain a value.

- Level: error
- Rule sets: OIOUBL 2.1 Credit Note rules (Denmark) 1.17.2
- Context: `doc:CreditNote/cac:OrderReference`
- Test: `normalize-space(cbc:ID) != ''`

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