# `406` - Not acceptable ## Description The server cannot generate a response that matches the list of acceptable values sent in the request's `accept` header. ## How to fix Provide an `accept: application/json` header in the request. Please note that an exception applies to the **GET** `/reports/{report_id}` endpoint. You can provide either `accept: application/json` or `accept: application/pdf` there. ## Example ```http HTTP/1.1 406 Not Acceptable content-length: 166 content-type: application/problem+json date: Wed, 17 Apr 2024 10:42:01 GMT upvest-request-id: afcd3c2f-6965-4e1b-bb3e-87a3b481ce29 { "type": "https://docs.upvest.co/errors/not_acceptable", "status": 406, "title": "Not acceptable", "request_id": "afcd3c2f-6965-4e1b-bb3e-87a3b481ce29" } ```