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
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CBIC communications to taxpayers must include an electronically generated DIN; communications without DIN are invalid and unverifiable.
All communications by any CBIC office to taxpayers and concerned persons must carry an electronically generated Document Identification Number (DIN), produced via the enhanced DDM online platform, enabling online verification, creation of a digital audit trail and standardized, prepopulated DIN-bearing templates for search authorisations, summons, arrest memos, inspection notices and provisional release orders; communications lacking an electronic DIN (except as previously exempted) are to be treated as invalid and deemed never issued.