# PEPPOL-T16-B20402

Source: https://xmlvalid.com/rules/PEPPOL-T16-B20402

> Value MUST be part of code list 'ISO 6523 ICD list'.

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

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