This read-only CucsFsmFsmStageStatus enum reports the pass/in-progress/fail state of this individual stage, as opposed to the FsmFsmStatus field on the parent object which rolls up the entire workflow into one status. Reviewing a table of these per-stage values lets an admin see exactly where in the sequence a workflow is stuck, since every stage before the stuck one should show completed and every stage after it won't yet exist. A stage status of 'fail' on one particular record while every other stage in the same workflow shows 'skip' or completed pinpoints the exact failure point for troubleshooting.