Event Handling Activities

Events happen only within top-level process and complex activities. The different types of event handling activities are: exception, timeout, and compensation handling.

• Exception Handling
  Exceptions are caused by <<ThrowException>> activities or correspond to faults returned by operations invoked by service invocation activities. Exception handling is possible when the complex activity contains an exception activity or service invocation.
• Timeout Handling
  Timeout handling is possible only when the complex activity contains timers.
• Compensation Handling
  The compensation handling is executed when a compensate activity is executed in the outer scope of the complex activity to compensate.