Message

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

Context
cac:DespatchLine
Test
(cac:Item/cac:StandardItemIdentification/cbc:ID) or (cac:Item/cac:SellersItemIdentification/cbc:ID)
Usage
/ ubl:DespatchAdvice / cac:DespatchLine / cac:Item / cac:SellersItemIdentification
/ ubl:DespatchAdvice / cac:DespatchLine / cac:Item / cac:StandardItemIdentification