In reply to notice u/s. 139(9) defective return not accepted

if the return is filed before due date then return can be revised

I did not understand...what u r trying to Say

He has filed return in ITR-4 and Just submitted PNL Details. Due to which return filed by him came into Defective notice u/s 139(9) by Assessing officer. He has filed ITR-4 before due date of filling return and He want to know :-
Do he can file a Revise return ?

The answer is Yes as he has filed his return before due date he can Revise his return.

Thanks 

But I would like to know that the ITR-4 is to be filed U/s. 139(5) as revised or u/s. 139(9) as a correction of defective return ? Because previously defective return is not accepted as defective by assessee, but to get the refund, ITR4 is required to file