Hello Tuhin , Your question is not proper, from your question it is not properly cleare that what you want to ask, but as per my understanding you want to know about required documents for EWD certificate. so below are the list of certificates which are required for EWS

Aadhar card

PAN card

Income certificate

Cast certificate

BPL Card

Bank statement 

Passport size photo

I hope it will help you.

Thanks.