We are involved in portal development using Webcenter and UCM. Now we are trying to implement news editing on a portal page with site studio wizard. It's not a user-friendly way, so we decided to use WCM_EDIT_DATA_FILE service to get edit form for a content related to our news. But when we try to request to it like http://host:port/cs/idcplg?IdcService=WCM_EDIT_DATA_FILE&dDocName=<our dDocName> we get an 404 error. Site studio is installed of course. Does anybody got some clue why can it happen?