Generation and quoting of document identification number (DIN) on any communication issued by the officers/staff of the Commercial Taxes Department

Document Identification Number requirement mandates computer generated DIN on departmental communications; non DIN communications are invalid unless regularized.

A mandatory Document Identification Number (DIN) must be computer generated and quoted on all departmental communications under the GST and subsumed acts; communications lacking an electronically generated DIN are invalid. Limited exceptions for technical failure or urgent off site issuance are allowed but require written reasons, an express notice on the communication, and post facto regularization within 24 hours by superior approval, DIN generation and filing. GST Act correspondence is to use the GSTN Back Office portal where available; otherwise the departmental DIN system on the online portal must be used.