In fact, even if the target of the reverse-engineering is to remodel a system, it must also prototype the migration of some key component to the new architecture to check that it is possible.

If the source component is a Business Process component or Staff Process, system exceptions that occur in the target service component are returned to the caller.

When a system exception occurs at the target component during an asynchronous invocation, the message is rolled back to the incoming destination and redelivered.