During the Data Synchronisation it is essential that the Server Company be connected to Tally.NET. To connect the Server Company to Tally.NET, follow the steps given below:
Go to Gateway of Tally > click F4: Connect or press F4
In the Connect Companies to Tally.NET screen,
Note: The Connect Companies to Tally.NET screen does not appear when there is a single company to be connected. The company directly connects to Tally.NET when you click F4: Connect Cmp or press F4.
On successfully connecting to Tally.NET the Connection Status is displayed in the Calculator Panel: