If you have lost the payment receipt before entering it on the application,

Check if you have noted the transaction ID, challan no. or any payment info elsewhere.If yes, head for the branch & request for a duplicate copy from them with those details.

Incase you don't have any information of payment, Try to approach the bank to see if they can help you. and ask for some proof of payment made at their branch.

Otherwise there is no any alternative way.