This discussion explains the process of uploading a TDS return FVU file to the Income Tax website. It clarifies that while you can log in with your PAN, a separate registration on the TRACES website using your TAN number is necessary for TDS return uploads.
19 May 2020
How to upload TDS return fvu file in the Income tax site? We can login with pan number and password in the IT site. But, for uploading TDS return, whether fresh registration is required with TAN number ?