Dear Hridoy, unfortunately, the correction window alongbl withbthe basic registration has been closed and you cannot make any further changes to your application. If the error is with her last name, like you added her maiden name instead of your Dad's surname, it is still acceptable because women change their last names after marriage. Even if it is a spelling error like instead of 'Lakshmi' you wrote 'Laxmi', its still ok. And if her name is 'Lakshmi Kumari Trivedi Roy' and you jumble them, it is still acceptable. But if its a major error that you wrote 'Lakshya' instead of Lakshmi, you need to get corrected. Please reach out to the helpdesk. 

Hey buddy, the correction window for AIIMS was from january 17th 2019 to january 22nd 2019, you cant make corrections at this point i am sorry about that, but what you can do is mail the Assistant Controller of Examinations- exams.ac@gmail.com and state your problem and request them for a solution, good luck