Transaction: SALE
In the SAP R/3 System home window (shown above), type SALE into the command field and click Enter to display the Distribution (ALE) Structure window.
Expand the tree to display IDoc Interface / Application Link Enabling (ALE) > Basic Settings > Logical Systems > Define Logical System.
Click the Activity button to select Define Logical System. This displays the Logical Systems Overview window.
Click the New entries button to display the New Entries window.
Enter the logical name for your SAP Adapter using capital letters and a brief descriptive name.
Click Save. The Change Request Entry window appears.
Click the Create request button, to display the Create Request window.
Enter a short description (e.g., Adapter Test) and click Save. The Change Request entry window appears.
Click Enter to add the new data into the system. You are now returned to the Logical Systems Overview window, and the new Logical System appears in the list.
Click Save and select the Back button repeatedly until the SAP R/3 System window appears