Create one tree source definition for all mappings.
To manually create a tree source definition:
In the Source Analyzer, click Sources > Create.
The Create Source dialog box appears.
Enter a name for the tree source definition in the appropriate field.
Select PeopleSoft as the database type.
Enter a name in the Database Name field.
In the Navigator, the database name appears below the Sources node in the folder. All created tree source definitions defined with this database name appear below it in the Navigator.
Click Create. Click Done.
The source definition does not contain any tree attributes. You import tree attributes for each instance of the source definition you include in a mapping.