# PEPPOL-T16-B19801

Source: https://xmlvalid.com/rules/PEPPOL-T16-B19801

> Element 'cbc:ID' MUST be provided.

- Level: error
- Rule sets: Peppol Despatch Advice rules 3.5
- Context: `/ubl:DespatchAdvice/cac:DespatchLine/cac:Item/cac:BuyersItemIdentification`
- Test: `cbc:ID`

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