Viewing Messages Defined for Service Operations
The Existing Service Operations section of the Services page contains a Messages Links tab that displays the request and response messages defined for each service operation.
This example illustrates the Existing Service Operations section of the Services page. The example shows the Message Links tab displaying request and response messages for the service operations that are associated with the IB_EXAMPLES service

Click the request or response message name to open the message in the Message Definitions page, where you can view and modify message definition information, message schema information, and more.