Catch
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 want to perform to handle the exception. Transitions are permitted between Catch tracks within an exception scope, but you cannot transition back to the main execution track from the Catch track.
If you want to propagate the caught exception to the next highest scope, use the Rethrow activity.
For more information about using the Catch activity, see the description error handling in TIBCO ActiveMatrix BusinessWorks™ Process Design.