`email_sender_in_use`

HTTP 409conflict

A brand profile uses this e-mail sender. Choose another sender there, or archive the profile, first.

Handling it

Fix the request and send it again. message says what is wrong, and param names the parameter where there is one. Keep the request_id: it lets Parasend find the request.

The error, as the API returns it

{
  "error": {
    "type": "conflict",
    "code": "email_sender_in_use",
    "message": "A brand profile uses this e-mail sender. Choose another sender there, or archive the profile, first.",
    "param": null,
    "request_id": "req_5e69684dc3de68bf8651a712"
  }
}