The stage of processing when the event is raised. The event can be raised either when the DML plan is compiled or when it ...

The stage of processing when the event is raised.  The event can be raised either when the DML plan is compiled or when it is executed.  Use this data field to filter the event:  To see if the problem has occurred at least once, request only compile-time events.  To see how often the problem has occurred, request only non-compile-time events.