There is an email from TCS where they have explained this scenario. Nothing needs to be done and rectification will be done by the IT department and you will be notified. The 4th quarter TDS is not accounted for by the income tax department which is why the issue. They will correct it. Be patient, it should resolve on its own. If not, talk to tax adviser and file a rectification request and mention the mismatch in TDS deposited. You can also reach out to the helpline mentioned in the TCS email.
Check below thread too in case it doesn't resolve automatically:
Oh god ! You guys too?..... Even I got another demand of 3k even after paying 20k on time what's happening?
Huge discrepancy in what we filed and what IT is showing as received from TCS.
Better raise grievances in ITR filing portal
