Hello Aryan Vishwakarma,

Thanks for your query.

You can fill any of the roll no. and you should choose the one in which you score better, on the basis of which you want to secure admission in counselling.

Also carry passing certificates and counselling registration proofs that you have  filled the counselling form. Original certificate sof 10th and 12th and school leaving certificate.

.

Hope this helps...

Thank you and all the best...