This reports whether this specific dispatched task within the deletion FSM has finished, and its outcome. Because the actual 'remove the DVS' call is itself dispatched as a task, this is the field to poll to know whether that specific removal call has finished, as distinct from the overall deletion task or the stage wrapping it. A completion value of 'completed-with-failure' here for this specific task, while its parent stage still shows in-progress, narrows the failure down to this exact dispatched removal call.