Hi, I am very new to open source. I am trying to start an instance of a workflow on a Zope server from another Zope server. I did successfully with XML-RPC call but I need to do it with SOAP. I am note sure weather I can do it or not. I am running two Zope servers on my local m/c on 2 different ports. One is 8080 and 2nd one is 8090. On 8080: Page_template : SoapTest2 <html> <body> Activate instance at other server: <span tal:define= " l_user python:request.get('AUTHENTICATED_USER');"> <form action="SubmitNewSoapTest2" method="post" enctype="multipart/form-data"> <input type="file" name="p_file"><br> <input type="hidden" name="user" tal:attributes= "value python:l_user;"> <input type="hidden" name="password" value="Aruna"> <input type="submit" value="Submit"> </form> </span> </body> </html> SubmitNewSoapTest2 is external method. the python script for that is testTrigger as follow. from SOAPpy import SOAPProxy import xml.sax def startTestInstance2(self,p_file,user,password): myFile =p_file.read() # parser = xml.sax.make_parser() # parser.parse(myFile) url = 'http://localhost:8090/' namespace = 'urn:xmethods-testInstance' server = SOAPProxy(url, namespace) return server.SoapTestInstance(p_file,user,password) On 8090: I have a python script SoapTestInstance having 3 parameters (p_file,user,password) and following code. wf = context.TestFlow i_id = wf.addInstance('TestProcess', '', '', '', 0) instance = wf.getInstance(i_id) instance.manage_addFile(id="theFile", file=p_file, title="") wf.startInstance(i_id) wf.activateWorkitem(i_id, '0', user ) wf.completeWorkitem(i_id, '0') return "created new instance with code %s" % i_id It gives me following error. Error Type: SAXParseException Error Value: http://www.w3.org/TR/REC-html40/loose.dtd:31:2: error in processing external entity reference Any help will be appriciated. I already stucked here.. Aruna Kathiriya Sr.Consultant CIGNEX Technologies, Inc U: www.cignex.com "Implement IT Right"