Catch activity

The Catch activity receives control of execution when an unhandled
exception occurs. You can select a specific exception type to catch or you
can specify that this activity should catch all unhandled exceptions. You
can have more than one Catch activity in each exception scope, but each
Catch activity must have a unique exception type.
The Catch activity allows you to transition to activities you wish to perform to
handle the exception. Transitions are permitted between Catch tracks within an
exception scope, but you can not transition back to the main execution track from
the Catch track.
If you wish to propagate the caught exception to the next highest scope, use the
Rethrow activity.