Use of the Event Handler List 
The event handler list provides the system administrator with comprehensive information about an event handler (EH).
Example
For example, you can display all data for all event handlers with a particular event handler type.
You can display information about an event handler and can perform a restricted search for an event handler type, for example. You can also use the event handler list to check whether SAP Event Management has created or updated data correctly. For example, you can check whether SAP Event Management has created an event handler in accordance with your instructions, or you can check whether an event message has been sent to SAP Event Management.
The following is not supported for the event handler list:
Display of event handler hierarchy
Display of event message extension
Display of event message document reference
Display of attachments
ID mapping in configured fields