E-payment of Indirect Taxes: banks must enable secure electronic challan issuance and provide CIN plus transaction ID records. Banks authorized Commissionerate-wise must provide secure online entry screens via NSDL, permit only authorized banks to complete financial transactions, and on payment allot a unique Challan Identification Number (CIN) with transaction ID and time. Participating banks must enable download or re-generation of the electronic challan counterfoil, print CIN and transaction ID in customer account statements, and display website procedures and contact details for counterfoil generation, re-generation, and grievance resolution.