Visit the branch where you took the draft and provide them the draft number. Also give them a letter with the draft details (on whose name you took the draft, the date, draft number, amount, payable city etc) and tell them that the draft is lost. As a first step, ask them to block the draft so that, the draft cannot be cashed by someone.

No. First you have to stop payment of the dd from the bank and in the application you have to apply for a duplicate print out of the dd. After you get the duplicate dd you can use it but if there was a specific date upto which the dd had to be submitted and if that date has elapsed then you can get this cancelled. The duplicate dd can be used in place of the l