idempotency_conflict

This Idempotency-Key was already used with a different request body.

HTTP 409. Nothing reached the broker.

Likely cause: A key was reused for a new request.

What to do: Use a new key for a new request; the earlier one stands.

Retry: No. The same request gets the same answer; change something first.

Listed under Orders and idempotency in Errors. Send the error’s requestId to support and we can find the request.