too_few_accounts
Fewer accounts were chosen than are deployed now.
HTTP 409.
Likely cause: An upgrade asked for fewer accounts than are running; the message says how many are deployed.
What to do: Park or delete some accounts first, or choose a larger number.
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.