On the SAP ERP system, call transaction SPRO.
In the SAP IMG menu, choose and then New Entries (F5).
In the Log.System column, enter a name for the logical system that you want to create.
Recommendation
We recommend that you use the following naming convention:
<system ID>CLNT<client number> (for example, CS7CLNT200)
<system ID> is the ID number of your SAP system.
<client number> in the number of the relevant client in your SAP system.
In the Name column, enter a description of the logical system.
Save your entries (Ctrl + S).