A reference that uniquely identifies a contract that relates to this transaction.

Cardinality
0..1
Namespace
cbc urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2
Data type
Document reference
Example value
frame123
Business terms
tir77-020
Rules
Identifier/Error message Flag
EHF-T77-B01201
Document MUST NOT contain elements not part of the data model.
fatal