The PowerDesigner BPM provides support for the following elements in a top-level diagram, when modeling a BPEL environment:
Empty activities - used to specify top-level Processes which are global services, that interact with partners (see Stereotype Activities in BPEL Choreography Diagrams).
BPEL4WS 1.1 models top-level processes (see Processes (BPM)) as standard processes in top-level diagrams with additional properties (see BPEL Top-Level Process Properties).
Partners - represent consumers of a service provided by the business process (initiating role) or providers of a service to the business process (responding role), and are connected to a top-level process by partner link types.
PowerDesigner models partners as organization units represented as actors (see Organization Units ( BPM)).
Partner Link Types - represent interactions between top-level processes and business partners.
PowerDesigner models partner link types as role associations (see Role Associations (BPM)) with additional properties (see WS-BPEL 2.0 Object Properties and BPEL4WS 1.1 Object Properties).