OptionaldefinitionAbsent only when the definition predates content fingerprinting.
The reporting effect's author-chosen name — one of the payload policy's two deliberate customer-string exceptions (module doc).
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.
Auto-transitions fired during the post-report cascade — a report that satisfies a transition moves the instance.