Hey!

Don,t worry, NTA will take care of that. Your exaam would not be rejected. What will happen is , system will not read your omr then the supervisor will check that out an dwould enter the correct roll number.

If you still have any doubts, you can mail it to NTA with the below email:

neet@nta.ac.in (mailto:neet@nta.ac.in)

You will surely get reply in a week.

Thankyou