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1. Document Identification Number (“DIN”) to be
quoted on all communications from CBIC

3. In this article, we will discuss in detail about Document
Identification Number (DIN) in FAQs form:
• 1. What is Document Identification
Number (DIN)?
•
Document Identification Number or
DIN is a unique number to be
generated for all the communications
sent by offices of CBIC to taxpayers
or other concerned person.
•

4. 2. What is the requirement to implement Document
Identification Number?
• DIN is getting implemented to keep government’s
objective of transparency and accountability.
• Through DIN, system will create a digital
directory for maintaining proper audit trails
of all communications.
• Considerably, it will provide recipient of
communication a digital facility to determine
genuineness of communication

5. Is there any exceptional situation provided wherein communication can be
issued without generating DIN?
• Yes, even though DIN is a mandatory requirement,
circular provides for 2 exigent circumstances
wherein document can be issued without mentioning
DIN:
• Situation 1:When concern officer is facing
technical glitch in generation of electronic DIN
• Situation 2: when communication regarding
investigation/enquiry, verification etc is
required to be issued at short notice or on urgent
basis and the concerned officer is outside the
office in discharge of his official duties.
• However, such exception can be exercised after
recording the reasons for the same in writing in
the concerned file.