Message SAP 00390 - Unable to schedule session &.

Diagnosis
An error occurred when scheduling a session to be processed in thebackground.

System Response
The session was not scheduled. A system log entry was created.

Procedure
Check the system log to see which error occurred.
1. Does the user have the necessary authorization to schedulebackground jobs?
2. Is the server you specified active?
3. Is any 'Batch work process' running on the application server?