Throw

Allows you to create an error along a specific BP path. 

Terminate Process

Allows you to terminate an entire BP before it reaches an end node. 

Intermediate Events

Provides a dropdown menu that lists the following elements. These elements handle exceptions that might occur during a BP or that compensate for exceptions that do occur. 

Timer Event

Specifies either a duration-based or deadline-based condition that determines which branch a BP takes. A duration-based condition is satisfied after a specified elapsed time. A deadline-based condition is satisfied at a specified time. A timer event is used in conjunction with an event-based decision. 

Message Event

Similar to a receive activity, but occurring only in the middle of a process and only with event-based decisions. Each message event can be a different message. 

Catch Named Exception

Handles named exceptions. Each automated (backend) system or web service can publish their possible error codes (for instance, fault 15 is “bad data”), and those codes can be mapped to exception handlers. Each exception handler is connected to the Scope that surrounds one or more steps in a BP. The components within that Scope throw the exceptions when errors occur. The exception handler automatically initiates the appropriate process to handle the problem. 

Catch All Exceptions

Handles un-named exceptions that occur in a Scope or across a BP.

Compensation Handler

Allows you to design the process and circumstances in which compensation takes place. This used when a part of a BP fails and requires a rollback of upstream activities (such as money has to be returned to the customer account). Automatically, upstream steps in the BP are notified that the failure has occurred and certain transactions need to be reversed, sometimes in a sequential order.