Message

Each item in a shopping cart line SHALL be identifiable by either "item sellers identifier" or "item standard identifier"

Context
cac:Item
Test
(cac:StandardItemIdentification/cbc:ID) or (cac:SellersItemIdentification/cbc:ID)
Usage
/ ubl:Catalogue / cac:CatalogueLine / cac:Item / cac:SellersItemIdentification
/ ubl:Catalogue / cac:CatalogueLine / cac:Item / cac:StandardItemIdentification