Sorry Alpa, 

Unfortunately as per the notice issued by AIIMS in https://www.aiimsexams.org/pdf/Notice%20regarding%20UG%20Courses.pdf

no further corrections can be made.

You application form may be get cancel this year as this information is collected for the verification but it is dependent on that person who is doing g this thing he may check your both roll no to collect right information. To see you are right person he can allow you to appear in exam. But it will be done by computer than may be your form will be rejected.
But you just stay connected with your registered email and mobile no. May be they will inform you to make change.
Dont think about it now just work blindly and see your desires comes true.

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