Use Web Services Reliable Messaging (WS-ReliableMessaging) to ensure the reliable delivery of SOAP messages between web services clients and providers. The WS-ReliableMessaging standard defines a messaging protocol to identify, track, and manage the reliable delivery of messages between the reliable messaging source and destination.

Integration Server uses the WS-ReliableMessaging protocol to reliably send SOAP messages between web service providers and clients even if the destination endpoint is temporarily unavailable or if the network connection fails. The WS-ReliableMessaging protocol defines how messages should be sent again if they are not delivered successfully, thereby ensuring that the messages are delivered to the destination endpoint and that duplicate messages are not delivered.