I am new to webmethods. I am trying to retrieve all the failed services and resubmit them. I am retrieving the services using pub.monitor.service:GetList. I am iterating through the list and mapping the document to the document reference - myService that I have defined so that I can use the contextID property of the document to resubmit the service. When I run the same I can see the ContextID in the myService document in the results pane. But when I try to use the contextID to resubmit the service com.wm.app.b2b.server.ServiceException: Missing input from pipeline: contextID.