2cb3f144_able_Messaging___Project_Kenai__Description
[Option] Deliver Messages In Exact Order [Description] 
Specifies whether the Reliable Messaging protocol ensures that the application messages for a given message sequence are delivered to the endpoint application in the order indicated by the message numbers. This option increases the time to process application message sequences and may result in the degradation of web service performance. Therefore, you should not enable this option unless ordered delivery is required by the web service.
Chapter 10. Using Reliable Messaging — Project Kenai
Description