Diagnosis
You chose Compare. You can use this function to compare requestsor tasks with each other. However, the SAP System does not know whichrequests to compare.

System Response
The function terminates.

Procedure
Position the cursor on a request or task that you want to compare, andchoose Compare.
Double-click the request or task that you want to compare the firstrequest or task with.
The system compares the objects of the chosen requests or tasks anddisplays the results.
If you want to compare Repository objects, use Version Managementfunctions (Object -> Versions).