OptionaldefinitionOptionaldwellTime spent in the exited stage (its entry's enteredAt to this exit,
on the engine clock). Omitted when the exited entry is unavailable.
Positional index of the exited stage in the definition's stages[]
order — indexes, never names, so the payload stays content-free.
The instance document _id — the per-instance join key (engine-minted
<tag>.wf-instance.<random>; caller-supplied ids ride verbatim). One of
the payload policy's two deliberate customer-string exceptions — see the
module doc.
The entered stage was already visited on this instance — a loop-back.
The entered stage is terminal (no transitions out) — reaching it completes the instance.
Positional index of the entered stage in the definition's stages[] order.
Condition-driven transition vs. the setStage admin override.
Absent only when the definition predates content fingerprinting.