---
title: "Changes to Join a channel"
method: PUT
path: "/v3/group_channels/{channel_url}/join"
---

# Changes to Join a channel

`PUT /v3/group_channels/{channel_url}/join`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 4 of 36 revisions.

- **2025-10-17** `b05d4e3c6329`: 1 info
- **2025-07-27** `7a85bad03e90`: 2 warning, 4 info
- **2023-11-10** `135d8b0705d4`: 1 info
- **2022-02-16** `c42164095c7c`: 1 breaking

## Changes

- **2025-10-17** `b05d4e3c6329`: 1 info
  - the request property `access_code` became nullable
- **2025-07-27** `7a85bad03e90`: 2 warning, 4 info
  - deleted the `header` request parameter `Api-Token`
  - removed the request property `channel_url`
  - api operation id `gcJoinChannel` removed and replaced with `joinAChannel`
  - added the new optional `header` request parameter `api-token`
  - the request property `access_code` became optional
  - added the media type `application/json` for the response with the status `200`
- **2023-11-10** `135d8b0705d4`: 1 info
  - the `header` request parameter `Api-Token` became optional
- **2022-02-16** `c42164095c7c`: 1 breaking
  - the `header` request parameter `Api-Token` became required

---

[Operation](https://skmtc.dev/sendbird/apis/sendbird-platform-sdk/docs/v3/group_channels/:channel_url/join/put.md) - [API](https://skmtc.dev/sendbird/apis/sendbird-platform-sdk.md) - [Page](https://skmtc.dev/sendbird/apis/sendbird-platform-sdk/changes/v3/group_channels/:channel_url/join/put)