cac:ParentDocumentReference
Reference to the procurement procedure that this response refers to.
- Namespace
 cacurn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2- Data type
 - cac:DocumentReferenceType
 - Child elements
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Card Name Description 1..1 cbc:ID Document identifier
An identifier that is specified by the buyer and used as a reference number for all documents in the procurement process. It is also known as procurement project identifier, procurement reference number or contract folder identifier.