Revised service tax return?

Krishna (STUDENT) (136 Points)

10 January 2012  

For Revision of ST-3 There is a time Limit of 90 days?

But how to rectify the mistakes made in the returns of Financial year-09-10 and 10-11.

If any short fall of payment, we will the balance due amount along with interest but how to rectify the figure which is shown lesser in previous returns?

what is the alternative?

Please Guide Me.