Yes, there’s a chance you can take back your resignation in TCS, but it depends on a few factors:

• The most important thing is to take action prior to TCS HR formally accepting your departure. Ideally, as soon as you turn in your resignation letter, you should get in touch with them.
• Your manager may need to provide their approval before your resignation is sent to HR after they get it. This gives you a chance to talk to your management about your predicament and possibly back out of your resignation.

Here’s what you can do:

Contact HR: 

Write a formal email stating that you would like to rescind your resignation. Give a clear explanation for your change of heart.

Talk to Your Manager:

Communicate honestly with your management about the reasons you would like to remain. Having their backing can greatly improve your chances of being able to rescind the resignation.
Recall that TCS does not have a specific policy on the retraction of resignations. HR and your manager have the last say in the matter. However, you can increase your chances of remaining with the organisation by moving promptly and making a strong case for yourself.