Hello Candidate,

While filling up the Neet application form its mandatory for the candidates to fill out all the information which the site has asked for which also includes class 12th roll number.

If you have any confusion to enter which roll number, it's best to enter the one for which you are going to appear in the examination. Even if you feel like you need to edit your documents before final submission the NTA provides a correction facility window for that as well.

Hope you found it helpful!!