This could be because:
a) your PAN was not properly quoted in the tax payment challans or
b) the bank has made error in entering the PAN while digitizing the challan data or
c) the bank has failed to upload the digitized information to TIN.
You can use the challan status enquiry facility provided at TIN website to verify whether a challan bearing the Challan Identification Number (CIN) given in the counterfoil available with you has been uploaded to TIN. If the PAN as seen in this uploaded data is not your PAN, you may take up with your Assessing Officer for rectification of PAN.
In case the bank has not uploaded the details with respect to your deposit of tax, you may take up with your bank so that this information is uploaded.

This could be because the bank has made error in data entry. You should take up the matter with your bank for rectification of amount.

You may quote this CIN that is quoted in Form 26AS in your tax return.

The possible reasons for incorrect credits in Form 26AS can be on account of wrong data provided by the deductor in the quarterly TDS/TCS statement. You may request the deductor to rectify the TDS/TCS statement using prescribed correction statement.

The possible reasons for no credit being displayed in your Form 26AS can be:

• Deductor/collector has not filed his TDS/TCS statement;
• You have not provided PAN to the deductor/collector;
• You have provided incorrect PAN to the deductor/collector;
• The deductor/collector has made an error in quoting your PAN in the TDS/TCS return;
• The deductor/collector has not quoted your PAN;
• The details of challan against which your TDS/TCS was deposited was wrongly quoted in the statement by the deductor or wrongly quoted in the challan details uploaded by the bank.

To rectify these errors you may request the deductor:

• to file a TDS/TCS statement, if it has not been filed;
• to rectify the PAN using a PAN correction statement in the TDS/TCS statement that has been already uploaded if it has made an error in the PAN quoted;
• to furnish a correction statement if the deductor had filed a TDS/TCS statement and had inadvertently missed providing your details or you had not given your PAN to him before he filed the TDS/TCS return;
• to furnish a correction statement if the deductor had filed a TDS/TCS statement which had mistake in the challan details;
• to take up with the bank to rectify any mistake in the amount in the challan details uploaded by the bank.

In case this is on account of TDS/TCS credit, you may intimate the deductor/collector. In case this is on account of advance tax/self assessment tax, you may intimate your assessing officer.

If there is any error is in the TDS/TCS statements or in the challan details uploaded by the bank and the same has been rectified, the original credit entry will be reversed by way of a debit entry in Form 26AS and a new credit entry (if applicable) will be posted.

If PAN holder details are incorrect, the same can be updated by making an application using the 'Request for new PAN card or/and changes or correction in PAN data'. This request can be made either online or through the existing network of TIN-FCs. Details are available at the TIN website.

PAN holder can contact TIN Call Centre, National Securities Depository Limited, 3rd Floor, Sapphire Chambers, Near Baner Telephone Exchange, Baner, Pune – 411 045. Tel: 020 – 2721 8080. Fax: 020 – 2721 8081. Email: tininfo@nsdl.co.in