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A new GSTR-2B API is applicable from 14th Nov 2024, which affects auto-reconciliation of GSTR-2B for Oct-24. Stay tuned for our upcoming release, TallyPrime 5.1, which supports this and makes reconciliation even smoother.
https://help.tallysolutions.com/docs/te9rel62/Licensing/surrender_license.htm

Surrendering Your Tally.ERP 9 License

You need to surrender your Tally.ERP 9 license if you want to use the license on another computer.

To surrender your Tally.ERP 9 license

1.    Start Tally.ERP 9.

2.    Click F12: Configure > Licensing > Surrender License.

o     If you are a Microsoft Windows standard user, and do not have the required rights, a message appears as shown below:

Click Yes, and enter your computer administrator username and password to restart Tally.ERP 9 with administrator rights.

o     If you have Microsoft Windows administrator rights, a message appears as shown below:

Click Yes, for Tally.ERP 9 to restart with administrator rights.

3.    Enter the Administrator e-mail ID and Tally.NET password in the Surrender License screen, as shown below:

4.    Press Enter to surrender your license. A confirmation message appears once your license is surrendered.

Note: If you are surrendering your site license, you can enter the site administrator e-mail ID and password.

See also

Reactivating Tally.ERP 9

Activating Tally.ERP 9

Licensing - FAQ