When you create a proxy service, a message flow is created by default, with an empty starting node. The process for constructing the message flow follows this general pattern:
Alternatively, you can right-click a node or action in the Message Flow Editor to display menus of nodes and actions that can be inserted in that location. The menu contains one or more the following:
Alternatively, you can select a node or an action from the Outline view. To open the Outline view, in the ALSB perspective, select Window > Show View > Outline.