This CucsFsmFsmStageStatus value is the completion status code of one individual step (e.g. connect, transfer, verify) inside the FSM run for a log-export policy within its parent FSM. It tells an admin whether this specific step succeeded, failed, or is still running, which is more granular than the overall FSM status alone. For example, an admin drilling into a stalled log export to see which specific step it is stuck on, and this stage-level status is what narrows down exactly which step in that sequence is the problem.