The sellers identifier for the item. Associates the item with its identification according to the seller's system. The sellers ID for the item.

Cardinality
1..1
Namespace
cbc urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2
Example value
11111
Rules
Identifier/Error message Flag
BII2-T01-R031
Each order line MUST have an item identifier and/or an item name
fatal