A guaranteed delivery event occurs when a client uses guaranteed delivery to invoke a service on a remote Integration Server, and when the server returns the service results to the requesting client. There are two types of guaranteed delivery events:

Each guaranteed delivery transaction generates a GD Start event and a GD End event. You can subscribe to GD Start and GD End events to invoke event handlers that log guaranteed delivery transactions to a file or database. You might also want to use guaranteed delivery events to invoke event handlers that send notification. For example, if you use guaranteed delivery to invoke a service that processes purchase orders, you might want to send notification to a business account manager about purchase orders from a particular client, or when the value of a purchase order is greater than a certain amount.