Updating the license is required when:
TDL/general configuration assigned to the account have to be applied to the respective site.
Tally Software Services (TSS) needs to be renewed.
To update the license
Go to Gateway of Tally > F12: Configure > Licensing > Update License
Enter the e-mail ID and password in the Administrator Login screen, and press Enter.
A confirmation message is displayed once the license is successfully updated.