SCA inbound message flows are message flows that can be called by a service component running on WebSphere® Process Server. By using SCAInput and SCAReply nodes in your message flow, you can process messages from WebSphere Process Server.
When you want WebSphere Process Server to call services that are provided by IBM Integration Bus, the SCAInput node acts as an SCA endpoint for the WebSphere Process Server service component. It accepts requests from WebSphere Process Server. The SCAReply node sends replies back to WebSphere Process Server.
The binding type derived from the SCA definition can be either Web Service or MQ; if an MQ binding is specified in the SCA definition, WebSphere MQ must be available to process the messages, so you must ensure that WebSphere MQ is installed on the same computer as your integration node. WebSphere MQ is not provided as part of the IBM Integration Bus installation package, but your license for IBM Integration Bus entitles you to install and use WebSphere MQ. For more information about using WebSphere MQ with IBM Integration Bus, see Installing WebSphere MQ.
The values for properties that relate to the binding supported by the specific SCA component are automatically supplied to the node from the Integration Bus SCA definition; you do not have to manually provide them.