Hello Aspirant

If you filled/provided any wrong details in the application form, you can rectify those mistakes when the correction window for JEE Mains will open.

You will be notified about the same on your registered mobile number/ registered email id.

But, once the correction period is over you won't be able to change anything in your application form, not even during the counseling process. So, make sure to rectify your details within the time.

Hope this helps