A positive identification of the relevant document, such as an unique identifier.

Cardinality
1..1
Namespace
cbc urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2
Data type
Identifier
Example value
12
Business terms
tir19-105
Rules
Identifier/Error message Flag
EHF-T19-B19501
Document MUST NOT contain elements not part of the data model.
fatal