The option Configure Existing License must be used in a LAN environment to configure an existing license to your Tally.Developer 9 from the Tally Gateway Server .
To configure the existing license
1. Right-click tally.developer.exe , and select Run as Administrator .
2. Go to License > Configure Existing License . The Configure Existing License screen appears as shown below:
3. Enter the Tally Gateway Server name and Port number .Alternatively, click Search Gateway Server(s) to list the compatible gateway servers.
4. Click Submit to configure the license.
Note: Go to License > License Info to view license, version, and subscription-related information.