Is this WebSphere BASE or ND? If it is ND, the SOAP_CONNECTOR_ADDRESS should be that of the Deployment Manager of the cell, not the LiveCycle appserver instance (server).
This is WebSphere BASE not ND. And I have been using right SOAP port from what shows in the ports section on the Integration Solutions Console of Websphere for this particular server in use. Could there be any other reason for such WAS specific error ?
If you are using single server instance in ND, go to WAS Admin console.
On the left side, click System Administration > Deployment Manager
At the Deploymnet Manager, open Ports under Additonal Properties
and note down the port for SOAP_CONNECTOR_ADDRESS. This is the port number you should use.
Hope this helps !