Hello there,

The candidates who have entered have some wrong information, and willing to change some data in the application form for JEE Mains , can edit their application form during the correction facility provided by NTA. But let me tell you that, you can't edit all the things in the form. You can edit only some specified things. You can also edit the choice of exam centres. The correction window is estimated to be open around January 19-21.

Hope it helps.