Use the advice that is given here to help you to resolve common problems that can arise when you develop web services message flows that contain HTTP and SOAP nodes.
Use the replies to the following questions to assist you in diagnosing problems with HTTP or SOAP nodes:
To gather information about HTTP nodes and listeners, you must start trace, run your message flows, then retrieve and format the trace information.
Trace the integration server and the HTTPListener component:
Turn off trace when you finish collecting information to avoid affecting the performance of the integration node.