Dear student,

Csab - central seat allocation board is responsible for filling vacant seats in nits or iiits or gftis, after josaa counseling.
Every year there are some seats vacant in participating colleges, so every year the seat were filled by csab round counseling.
So, if this year after josaa all rounds counseling, the seats remains vacant in colleges and definitely csab counselling will held. Basically counselling is of two rounds, so this year also we can expect that there will be a two round csab counseling.
The notifications of csab is not yet released.

Check out more information about csab counseling. :-
https://engineering.careers360.com/articles/csab/amp