Diagnosis
Missing assignment of a responsibility area.

System Response
The callback function requires specification of the agent or of acallback queue. It is also possible to enter both an agent and acallback queue.

Procedure
Enter a responsible agent or a callback queue. Callbacks in the samequeue are usually processed by a group. In the event of individualcallbacks, only the agent has to be entered. If the agent cannotprocess his callbacks, another agent can take over these callbacks.