In general, the BPEL process calls into the workflow component to assign tasks to users. When the workflow is complete, the human workflow service calls back into the BPEL process. However, if you want fine-grained callbacks (for example, onTaskUpdate or onTaskEscalated) to be sent to the BPEL process, you can use the Allow task and routing customization in BPEL callbacks option.

Make sure to manually refresh the BPEL diagram for this callback setting.

To specify task and routing customizations in BPEL callbacks:

This creates the while, pick, and onMessage branch of a pick activity for BPEL callback customizations inside the task scope activity.

For more information about specifying task and routing customizations, see Invoking BPEL Callbacks.