Hi aspirant,

If you have selected Code 3 instead of Code 2 during registration for NEET 2021, there is no need to worry about it and it would not affect your results by any means. If you fulfill the basic educational criterias, which you do then only thing you need to do is at the time of counseling you can provide relevant documents that you have passed class XII with pass grades and meet the eligibility criteria.

Hope it helps!!