eOffice ‘Issue Number’ to be Treated as DIN for Valid Communications, Separate DIN Not Required: CBIC Issues Important Clarification [Read Circular]
The Board stated that having both an Issue Number and a DIN on the same communication would lead to duplication of electronically generated unique identifiers, making the separate DIN redundant.
CBIC - DIN - Taxscan
CBIC - DIN - Taxscan
The Central Board of Indirect Taxes and Customs ( CBIC ), through Circular No. 252/09/2025-GST dated 23rd September 2025, has clarified that communications dispatched via the public option in the Office application, which already bear a unique and verifiable Issue Number, will not require a separate Document Identification Number ( DIN ).
Earlier, all communications, including those through eOffice, were required to carry a DIN in line with Circulars No. 122/41/2019-GST and 128/47/2019-GST. However, with the launch of a dedicated online verification utility (https://verifydocument.cbic.gov.in) taxpayers can now authenticate eOffice communications through their Issue Number itself, which provides details such as file number, date of issue, type of communication, issuing office, and masked recipient details.
The Board stated that having both an Issue Number and a DIN on the same communication would lead to duplication of electronically generated unique identifiers, making the separate DIN redundant.
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In its clarification, the board said that “5. In light of the above, quoting separate DIN on such communications dispatched using public option in Office application, which already bear issue number, will result into two different electronically generated verifiable unique numbers namely Issue No. & DIN on the same communication, which renders quoting of separate DIN on such communication unnecessary. It is therefore decided that for communications dispatched using public option in CBIC's eOffice application, the verifiable Office Issue number' shall be deemed to be the Document Identification Number and such communication shall be treated as a valid communication.
6. The Document Identification Number generated through DIN utility shall continue to be mandatorily quoted on all other communications which have either not been dispatched using public option in CBIC's Office application or which do not bear the verifiable Reference Number (RFN) generated on GST common portal.”
Accordingly, the Issue Number on eOffice communications will henceforth be treated as the DIN for validation purposes. However, quoting of DIN remains mandatory on all other communications not dispatched via the eOffice public option or those lacking a verifiable Reference Number (RFN) generated on the GST common portal. To this extent, earlier circulars have been modified.
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