---
title: "Changes to Generate or refresh an access token"
method: POST
path: "/connect/token"
---

# Changes to Generate or refresh an access token

`POST /connect/token`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 1 of 2 revisions.

- **2026-11-03** `09fa5e77c65b`: 2 breaking, 7 warning, 2 info

## Changes

- **2026-11-03** `09fa5e77c65b`: 2 breaking, 7 warning, 2 info
  - removed the media type `text/plain` for the response with the status `400`
  - the response property `error_description` became optional for the status `500`
  - added the new `access_denied` enum value to the `error` response property for the response status `500`
  - added the new `internal_server_error` enum value to the `error` response property for the response status `500`
  - added the new `invalid_grant` enum value to the `error` response property for the response status `500`
  - added the new `invalid_request` enum value to the `error` response property for the response status `500`
  - added the new `not_found` enum value to the `error` response property for the response status `500`
  - added the new `unauthorized` enum value to the `error` response property for the response status `500`
  - added the new `unauthorized_client` enum value to the `error` response property for the response status `500`
  - added the media type `application/json` for the response with the status `400`
  - added the optional property `error_details` to the response with the `500` status

---

[Operation](https://skmtc.dev/truelayer/apis/authentication-server/docs/connect/token/post.md) - [API](https://skmtc.dev/truelayer/apis/authentication-server.md) - [Page](https://skmtc.dev/truelayer/apis/authentication-server/changes/connect/token/post)