Error in it return

subha (CA) (98 Points)

29 August 2012  

I have filed the IT return of my brother for the A.Y 11-12 .Yesterday I received intimation U/s.143(1) for paying tax.On cross checking i found that same employer has deducted tax under two different TAN numbers but i have claimed the entire TDS amount by giving the latest TAN number. The return has been filed after the due date

Please suggest me whether i can make rectification if so give me procedures.