Servlet Xpress reported

Design Studio newbee trying to launch an IPA flow as a test and getting this error msg from code below:

function BUTTON_OnClick(id, row)
{
 if (id == "push14")
 {
  //trigger flow
  var s = portalWnd.AGSPath+"?_PDL=" + sProd +
                "&_TKN=WFWK.1&_EVT=ADD&_RTN=DATA&_LFN=ALL&_TDS=IGNORE" +
                "&FC=Add&SERVICE=" + Test + "&WORK-TITLE=Test" +
                "&_DELIM=%09&_OUT=TEXT&_EOT=TRUE";

  //This will call the request to trigger the flow
                 portalWnd.httpRequest(s);
 }

 return true;
}

Any ideas...?