# PEPPOL-T76-B09002

Source: https://xmlvalid.com/rules/PEPPOL-T76-B09002

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

- Level: error
- Rule sets: Peppol Order Response rules 3.2
- Context: `/ubl:OrderResponse/cac:OrderLine/cac:SellerSubstitutedLineItem/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