`delivery_not_found`

HTTP 404not_found

No delivery with that ID that you may see, in the mode of your key.

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": "not_found",
    "code": "delivery_not_found",
    "message": "No delivery with that ID that you may see, in the mode of your key.",
    "param": null,
    "request_id": "req_5e69684dc3de68bf8651a712"
  }
}