SAP Message RSO211 - Please choose one or more source systems

Diagnosis
If an object has properties that are specific to a source system, thenonly those dependent objects that are associated with the source systemare considered when it comes to collecting. For example, only thosetransfer rules, for which the respective source system was selected,are collected for an InfoSource.
However, you have not yet selected a source system.

System Response

Procedure
Please select one or more source systems that need to taken intoaccount when collecting. This setting is saved and is valid up untilyou change it again. You can change the selection via the pushbutton'Source system assignment'.