In your Suvit Desktop Application if you face this error so follow the below steps. This can be due to tally and Suvit connectivity issue. Simply change the tally port and restart the tally and Suvit application.
If you are facing an error: 'No Companies Subscribed" even when your company is open in your Tally and your Suvit Desktop Application is also open but it's reflecting "No Companies Subscribed" so in that case you have to follow the below steps.
1. Logout the Suvit Desktop Application from "Profile"
2. Quit the Suvit Desktop Application from "Task Manager".
3. Reopen the Suvit Desktop Application and login again and click on "Refresh" in the Application.