DEAR v.r. mukunthan,
FIRST OF ALL DOWNLOAD THE FOLLOWING PDF FILE.
https://www.incometaxindia.gov.in/archive/LeftMenu_ChallanCorrectionMechanism_26082011.pdfincometaxindia.gov.in%2Farchive%2FLeftMenu_ChallanCorrectionMechanism_26082011.pdf&ei=WePxTsL9EYvirAfjrNzmDw&usg=AFQjCNESDYbXAgX2HlmWksMZk0L21NwwUg
MOREOVER, THE OLTAS (On Line Tax Accounting System) HAS INTRODUCED New Procedure of challan correction by banks (for physical challans): the banks are permitted to correct data relating to three fields only i.e. amount, major head code and name.
The other errors can be corrected only by the assessing officers.
THERE IS TIME LIMIT MENTIONED FOR EACH TYPE OF CORRECTION., U MAY NEED TO REQUEST THE BANK WITH THE ATTACHED COPY OF PROCEDURE AFTER FILLING THE CORRECT DETAILS IN REQUEST LETTER ATTACHED..
NOTE: CORECTION IN FIELDS OTHER THAN PAN/TAN, ASS. YEAR AND AMOUNT ARE PERMITTED TO BE REQUESTED FOR CORRECTION WITHIN 3 MONTHS FROM DATE OF CHALLAN..U MAY FOLLOW THE SAME,
AS PAN/TAN CAN ONLY BE CORRECTED WITHIN 7DAYS..BEST LUCK IN ADVANCE..
TRY THE SAME PROCEDURE AND REPLY, WHETHER YOU GOT SUCCESS IN CORRECTING THE SAID CHALLAN... BEST LUCK.