The image shows a block diagram of the simple workflow with escalation in ascending order as follows. Each block is connected with an arrow to the next block, from top to bottom.

setUserDefinedAttributes (assign)—Assign that captures the user defined attributes of the task such as assignees, payload, expiration date

SetEscalationPolicy (assign)—Assign that captures the escalation policy

setSystemDefinedAttributes (assign)—Assign that captures the system attributes of the task such as process id, process version

initiateTask (invoke)—Initiates the task by invoking the TaskManagerService

The following tasks are represented as three boxes within one box, which has these conditions across the top of the box: while (task != completed || errored || expired || withdrawn)

initiateTaskActionHandler (invoke)—Initiates the TaskActionHandler business process. This process receives the actions from the Worklist application via the TaskManagerService

receiveUpdatedTask (receive)—Receives the updated task from the TaskActionHandler business process

escalateTask (invoke)—If the task is expired, escalate the task