# PEPPOL-T16-R003

Source: https://xmlvalid.com/rules/PEPPOL-T16-R003

> Each item in a Despatch Advice line SHALL be identifiable by either "item sellers identifier" or "item standard identifier"

- Level: error
- Rule sets: Peppol Despatch Advice rules 3.5
- Context: `cac:DespatchLine`
- Test: `(cac:Item/cac:StandardItemIdentification/cbc:ID) or (cac:Item/cac:SellersItemIdentification/cbc:ID)`

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