Dear Ravi, once you fill in all the details of the AIIMS Basic Registration form, you should select "Register". After registering, a message will appear on the screen saying "Registration Id." These details will also be sent to you at your registered Email Id and Phone number containing Registration Id and Password. This means that you have successfully registered. And the status of your application will be notified to you by January 16th. The final status will be notified by January 25th. If you haven't received any email or text regarding your registration, you will have to re-register as it means that your application wasn't successfully registered the first time. Please use this link for more information and correct procedure: https://medicine.careers360.com/articles/aiims-mbbs-application-form