UPDM 2 UPDM 2.1 Elements Current: UPDM 2.1 Services Viewpoint and Service Oriented Viewpoint Elements UPDM 2.1 Services Viewpoint and Service Oriented Viewpoint Elements This section will explain the following elements: Expose Request Service Attribute Service Access Service Channel Service Function Service Function Action Service Description Service Interaction Service Interface Service Message Service Operation Service Operation Action Service Parameter Service Service Policy Service State Machine ×