The criteria says the participation Fee (Rs 46,000 for OP & OBC and Rs 21,000 for SC, ST, PwD) will be

refunded after deducting the processing fee of Rs 1000, if no seat is allotted to the candidate.

There will be no refund if the candidate is allotted a seat in the Special Round

You can apply for refund if not reported to the allotted institute.

You can seek refund of seat acceptance fee through the online portal of JoSAA.

Hope you find it helpful

let me know in the comment box if you are having any further doubts

thanks

Good Luck!