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Activities occur in various model types.

As models may describe different types of activities, different object symbols are available. For example, in a business process an activity represents an action that is performed within an individual process, but a process in a process landscape represents a number of activities. The Activity object is used here, as well, but the object symbol illustrates that this is a number of activities that represents an entire process within a process landscape.

Object symbol Activity (Express)



Activity in a business process

Object symbol Process



Process in a process landscape



Process interface object symbol



Process interface






Stage in the Whiteboard






Activity in the Whiteboard



BPMN activities

Activities in the BPMN diagram