HTTP/1.1 400 Bad Request
Server: nginx
Date: Fri, 11 Feb 2016 19:23:31 GMT
Content-Type: application/json
Content-Length: 96
Connection: keep-alive
Access-Control-Allow-Credentials: true
Cache-Control: no-cache, no-store

{
  "error": {
    "code": "resource_already_exists",
    "doc_url": "https://stripe.com/docs/error-codes/resource-already-exists",
    "message": "Coupon already exists.",
    "type": "invalid_request_error"
  }
}