You need to create Tally.NET users to allow them to access the data remotely. Users can be created under the Tally.NET User and Tally.NET Auditor security level by the system administrator from Tally.ERP 9 or from the Tally website.
To understand, click the links below:
● Create Tally.NET Users from Tally.ERP 9
● Create Tally.NET Auditor from Tally.ERP 9
'Creating Remote Users' has been shared with