ip_previously_owned
This IP has had an owner before; a dedicated IP is never reassigned.
HTTP 409.
Likely cause: An attempt to allocate a previously held IP.
What to do: Allocate a fresh IP.
Retry: No. The same request gets the same answer; change something first.
Listed under Billing, slots and dedicated IPs in Errors. Send the error’s requestId to support and we can find the request.