Service Broker applications run in the background. You send a message and your command returns immediately. In the background, Service Broker keeps on trying to send the message to the destination service (Queue) until it puts the message there, times out or you end the conversation. These things all happen transparently to you and your sending application. So how would you troubleshoot your Service Broker applications if they're not working as expected, and how would you identify if something goes wrong? For for information click here.