406

Not acceptable. See examples below:

{
  "detail": "There is an ongoing activation for the given onboardingId",
  "instance": "https://problems.luna.akamaiapis.net/appsec/error-instances/d54686b5-21cb-4ab7-a8d6-a92282cf1749",
  "status": 409,
  "title": "Concurrent modification error",
  "type": "https://problems.luna.akamaiapis.net/appsec/error-types/CONCURRENT-MODIFICATION-ERROR"
}

{
  "type": "https://problems.luna.akamaiapis.net/appsec/error-types/INVALID-INPUT-ERROR",
  "status": 406,
  "title": "Invalid Input Error",
  "detail": "HTTP 406 Not Acceptable",
  "instance": "https://problems.luna.akamaiapis.net/appsec/error-instances/d54686b5-21cb-4ab7-a8d6-a92282cf1749"
}
{
  "type": "https://problems.luna.akamaiapis.net/fai-config-api/error-types/CONFLICT",
  "status": 409,
  "title": "Conflict",
  "detail": "Version 4 of FAI configuration 12345 is ACTIVE, so you can't create custom PII types on it. A version that's pending activation or has ever been activated can't be changed. Clone the version and make your changes on the clone.",
  "instance": "https://problems.luna.akamaiapis.net/fai-config-api/error-instances/9a9a0cd4db9808b4"
}