Can I get back ISM Dhanbad on spot round counselling after rejecting ISM Dhanbad M.Tech offer on coap?

Spot round is a separate round by individual IITs and you can get a seat only if it is vacant there but don't rely on that because only few IITs go for spot round as usually most of the seats get filled, though you will get to know about vacant seats when the notification will be released so keep ch