True when the rule produced a value to write (condition passed, no skip/error).
True when NewValue differs from OldValue.
OptionalErrorSet when computing the value errored (condition or source/transform).
The target field.
The computed new value (equals OldValue when not Applied).
The record's current value.
OptionalSkipWhy the rule did not apply (condition false / transform skipped).
The computed outcome of one rule for one record — the unit of a dry-run preview.