Hello Candidate,

Here are some of the criteria which can be changed in the correction window for JEE Mains examination-

First of all the students can change their preferred language of examination, their preferred examination centres, personal details, academic information, and an option for changing categories selected by candidates in the application form will also be provided to the candidates. If the candidates changed their category from general to reserved, then no refund of fees will be done. However, if the candidates change their category from reserved to general, then they have to pay the balance fee.

For more details you can visit https://www.google.com/amp/s/engineering.careers360.com/articles/jee-main-application-form-correction/amp

Hope you found it helpful. If you have any further queries feel free to post it here.