Thanks very much for the reply. I knew about setting the WSA values from the WSA tab but your statement "SoapUI uses the soap action as mentioned in the WSDL file to which the soapUI projects refers" reminded me to check the properties pane for the operation. I noticed that it wasn't showing a soap action even though I had explicitly defined one. Then it dawned on me that I hadn't refreshed the requests after I had added the soap action into the wsdl. I recreated the project and it was working like I originally expected it to.
Thanks again!
