Handling Business Process Choreographer EJB API exceptions
If a method in the BusinessFlowManagerService interface or the HumanTaskManagerService interface does not complete successfully, an exception is thrown that denotes the cause of the error. You can handle this exception specifically to provide guidance to the caller.
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However, it is common practice to handle only a subset of the
exceptions specifically and to provide general guidance for the other potential
exceptions. All specific exceptions inherit from a generic ProcessException
or TaskException. Catch generic exceptions with a final catch(ProcessException) or catch(TaskException) statement.
This statement helps to ensure the upward compatibility of your application
program because it takes account of all of the other exceptions that can occur.