Thrown by IRunStore.insert when the owner already has a run with the idempotency key: a send that loses that race answers the run the key has (IRunStore.findByIdempotencyKey).
The owner the key belongs to.
The key the owner already has a run with.
Readonly
Thrown by IRunStore.insert when the owner already has a run with the idempotency key: a send that loses that race answers the run the key has (IRunStore.findByIdempotencyKey).