Hi there,

I am sorry but there is not really a fixed time for it. However, i must assure you that on successful submission of your application you will receive a mail notification regarding the same.

If they will find another error in your application, they will again notify you through mail.

The process will be continued till the admit cards come. Also, you can check once during the correction window opening from OCT 28 TO NOV 13.

Please check out all information about it here: https://engineering.careers360.com/articles/gate-application-form-correction

Hope this helps...

Good Luck !!