Setting up Dynamics GP companies for access from Management Reporter is easy to do, but different from how the process had worked in the past. In GP 2015, and perhaps a bit before that, all you need to do is mark the “Enable General Ledger Reporting” in the Company Setup Options window.
Navigate to this window as follows: Administration area page >> Setup >> Company >> Company >> Options
Next you need to open up the Management Reporter Configuration Console. Click on the “Refresh Companies” tab. In this example I’m using the Data Mart version of MR. In the Legacy version, you may need to “import” the Dynamics GP companies from withing the Management Reporter Configuration Console.
Now when you open Management Reporter, your companies should all be displayed.