Validation of exemption in ca final

Nishant (CA) (30 Points)

29 October 2014  
Is there any criteria in ca final exams for claiming exemption? Like in other Subjects of the same Group u shd have minimum 25 Marks. Situation I Got 61 In IDT nd in other Subjects I got 30 above but After Revaluation in DT my score reduce from 31 to 23. Is My exemption Valid?