https://help.tallysolutions.com/docs/td9rel54/td9/getting_started_with_td9/licensing/surrendering_licenses.htm

Surrendering Your Tally.Developer 9 License

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

To surrender your Tally.Developer 9 license

1. Right-click tally.developer.exe .

2. Select Run as Administrator .

3. Go to License > Surrender .

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

5. Click Submit 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.Developer 9 license

Updating Tally.Developer 9 license

Configure Tally.Developer 9 license

Upgrading to the latest Tally.Developer 9 release