A ProgramTransitionEventType is specified for each of the DomainDownload Program transitions. The EventTypes trigger a specific Event notification to the Client when the associated state transition occurs in the running Program Instance. The Event notification identifies the transition. The SendingToSending state transition also includes intermediate result data.

The SendingToSending Program transition Event relays intermediate result data to the Client along with the notification. Each time the transition occurs, data items describing the amount and percentage of data transferred are sent to the Client.

The DomainDownload Program retains final result data following a completed or aborted download. The data includes the total transaction time and the size of the domain. In the event of an aborted download, the reason for the termination is retained.