Dear Hima, AIIMS Basic registration correction window will open from January 8th, 2019. You will be told of your Basic registration status by January 22nd, 2019. So technically, your application form will be either rejected or accepted after you make the corrections only. You can make changes to your address. It is not necessary to have your address as same as in the basic registration form. Now Aadhar is not mandatory for filling in your AIIMS application form.