Hello !

According to the BITSAT criteria;

Only Students who are appearing for 12th class examination in the current  year or who have passed 12th class Examination in previous year are eligible to appear in the BITSAT  test.

That is A candidate can appear only 2 times for BITSAT .

1st attempt is when they are appearing 12th.

2nd attempt is in the next year of appearing 12th.

Hope this cleared your doubt.