I have only one application no.after filling form of Jermain april bt by mistake I start to fillup form as fresh candidate.

Dear Purbita, as long as you haven't paid the fees, the application doesn't stand valid. You must have submitted the new form with same credentials and hence the message said, you have already been registered. So, you either can ignore the new application form and not make any payment or upload any scanned images. Then it will stand null and void. In thus case, you can go ahead and continue applying using your old registration details.

Hii

Your question is not clear. But let me guess. If this was your problem then ok, else write your question correctly

You need to fill only one form for jee main but if you have filled again, then you need to mail NTA stating the problem and asking them to cancel new one. You need to provide application number of both the form.