409 credential_conflict - NoResponse docs

{
  "type": "https://docs.noresponse.org/problems/credential-conflict",
  "title": "Credential association conflict",
  "status": 409,
  "detail": "The issued credential cannot be associated with this account.",
  "code": "credential_conflict",
  "request_id": "5e8be3a91fde9499f7ce48ae66290895"
}

{
  "type": "https://docs.noresponse.org/problems/credential-conflict",
  "title": "Credential association conflict",
  "status": 409,
  "detail": "The issued credential cannot be associated with this account.",
  "code": "credential_conflict",
  "request_id": "5e8be3a91fde9499f7ce48ae66290895"
}

HTTP 409 Not retryable

What to do

Check the account and issued-key hash. Retiring an association does not reassign it or revoke the actual key. Create a new key in your service for another account.

In the SDKs

The Node and Python SDKs raise ConflictError. The Go SDK returns *apierrors.ConflictError, which you match with errors.As.

{
  "type": "https://docs.noresponse.org/problems/credential-conflict",
  "title": "Credential association conflict",
  "status": 409,
  "detail": "The issued credential cannot be associated with this account.",
  "code": "credential_conflict",
  "request_id": "5e8be3a91fde9499f7ce48ae66290895"
}

Every error has this shape. Errors and limits lists every code.