Error in income tax return

This query is : Resolved

Querist : Anonymous

Querist : Anonymous (Querist)

28 August 2012 Sir,
I Have e filed the IT return of the AY 2011-12 of my brother in which the same employer has deducted the TDS by using 2 different TAN numbers but by oversight I had mentioned only the latest TAN number and claimed the entire amount
I have filed the return after the due date - 24/09/2011
Now intimation u/s.143(1) has been sent by the department and they have asked to pay the balance amount.
Please guide me what to do whether I can file a revised return if so give me the procedures
please reply