# PEPPOL-T16-B22402

Source: https://xmlvalid.com/rules/PEPPOL-T16-B22402

> Value MUST be part of code list 'Recommendation 20, including Recommendation 21 codes - prefixed with X (UN/ECE)'.

- Level: error
- Rule sets: Peppol Despatch Advice rules 3.5
- Context: `/ubl:DespatchAdvice/cac:DespatchLine/cac:Item/cac:AdditionalItemProperty/cbc:ValueQuantity`
- Test: `not(@unitCode) or (some $code in $clUNECERec20 satisfies $code = @unitCode)`

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