Circular No.128/47/2019-GST
No. GST/1NV/DIN/01/19-20
Ministry of Finance
Department of Revenue
Central Board of Indirect Taxes and Customs
GST-Investigation Wing
Room No.01, 10th Floor,
Tower-2, 124, Jeevan Bharti Building, 
Connaught Circus, New Delhi- 110001. 
Dated the 23rd December, 2019
To,
All Principal Chief 
Commissioner(s)/ Chief Commissioner(s)/ Principal Director General(s)/ Director 
General(s)/ 
All Principal Commissioner(s)/ Commissioner(s) / Principal Additional Director 
General(s)/ Additional Director General(s)/ Joint Secretaries/Commissioners, 
CBIC.
Madam/Sir,
Subject: Generation and quoting of Document Identification Number (DIN) on 
any communication issued by the officers of the Central Board of Indirect Taxes 
and Customs (CBIC) to tax payers and other concerned persons — reg.
Attention is invited to Board's Circular No. 
122/41/2019- GST dated 05th 
November, 2019 that was issued to implement the decision for Generation and 
Quoting of Document Identification Number (DIN) on specified documents. This was 
done with a view to leverage technology for greater accountability and 
transparency in communications with the trade/ taxpayers/ other concerned 
persons.
2. Vide the aforementioned Circular, the Board had specified that the DIN 
monitoring system would be used for incorporating a DIN on search authorisations, 
summons, arrest memos, inspection notices etc. to begin with. Further, a 
facility was provided to enable the recipient of these documents/communications 
to easily verify their genuineness by confirming the DIN on-line at cbic.gov.in. 
In continuation of the same, the Board has now directed that electronic 
generation and quoting of Document Identification Number (DIN) shall be done 
in respect of all communications (including e-mails) sent to tax payers and 
other concerned persons by any office of the Central Board of Indirect Taxes and 
Customs (CBIC) across the country. Instructions contained in this Para would 
come into effect from 24.12.2019.
3. Accordingly, the online digital platform/facility already available on the 
DDM's online portal "cbicddm.gov.in" for electronic generation of DIN has been 
suitably enhanced to enable electronic generation of DIN in respect of all forms 
of communication (including e-mails) sent to tax payers and other concerned 
persons. On the one hand electronic generation of DIN's would create a digital 
directory for maintaining a proper audit trail of communications sent to tax 
payers and other concerned persons and on the other hand, it would provide the 
recipient of such communication a digital facility to ascertain the genuineness 
of the communication.
4. In this context, the Board also felt it necessary to harmonize and 
standardize the formats of search authorisations, summons, arrest memos, 
inspection notices etc. issued by the GST/Central Excise/Service Tax formations 
across the country. Accordingly, the Board had constituted a committee of 
officers to examine and suggest modifications in the formats of these documents. 
The committee has submitted its recommendations. The standardized documents have 
since been uploaded by DDM and are ready to be used. When downloaded and 
printed, these standardized documents would bear a pre-populated DIN thereon. 
Accordingly, the Board directs that all field formations shall use the 
standardized authorisation for search, summons, inspection notice, arrest memo 
and provisional release order (the formats are attached). These formats shall 
be used by all the formations w.e.f. 01.01.2020.
*5. The Board once again directs that any specified communication which does not 
bear the electronically generated DIN and is not covered by the exceptions 
mentioned in paragraph 3 of Circular No. 122/41/2019-GST dated 05.1 1.2019, 
shall be treated as invalid and shall be deemed to have never been issued.
6. The Chief Commissioner(s)/Director General(s) are requested to circulate 
these instructions to all the formations under their charge for strict 
compliance.
 Difficulties faced, if any, in implementation of these instructions may be 
immediately brought to the notice of the Board.
Hindi version to follow.
Encl: As above 
(Neeraj Prasad)
Commissioner (GST-Inv.), CBIC 
Tel. No.: 011-21400623
Email id: gstinv-cbic@gov.in
Copy to:
i. Chairman, CBIC & All Members, CBIC 
ii. DG Tax Payer Services, CBIC 
iii. Pr. DG (Systems and Data Management) 
iv. Webmaster- for uploading on the CBIC official website.
 
Refer Circular No. 249/06/2025-GST dt. 09.06.2025
Refer Vide: Circular No. 252/09/2025-GST dt. 23.09.2025