Yesterday I received an email u/s 143(1) from CPC stating that due to internal changes in CPC system the communication reference nos have undergone a change for their order dated 13-Sep-12 pertaining to AY 2012-13. they have indicated earlier ref. no and modified ref. no and last line states that "you are requested to quote the modified ref. no. for any rectification request. I have received a small amount as refund and got a clear ITR processed. Kindly advise what is to be done. Thanks
GR Babu