Configuration
- Key — pick from the available meta keys.
:actionis:createor:updateduring replication.:inserted_at/:updated_atare the model’s own timestamps.:mapping_inserted_at/:mapping_updated_at/:mapping_statusapply to the mapping for the system in scope.
Empty meta
If the chosen key isn’t populated for this evaluation (e.g. design-time eval without an action picked), the node emits an empty timeline. Pair with Switch’s:empty port to provide a fallback.