last_credential API error

The final active workspace credential cannot be removed.
The API returns HTTP 409; use requestId to trace the refusal.

{
  "error": "last_credential",
  "message": "The final active workspace credential cannot be removed.",
  "requestId": "req_a1b2c3d4e5f6"
}

What to do

The final active workspace credential cannot be removed. Correct the request or state before retrying.