You can edit the UDM directly from zDE on the site specific UI itself.   Click on UDM files on the zDE menu. This lists the auto and custom UDMs in the site Click on any of the response UDMs that you need to edit. Make the necessary changes in the zDE itself and save it. All the Features / Functionalities like Dataport, datatype, parameters etc. can be edited. As done earlier, You need not edit the responseMap.xml file to effect the changes.