MadelineProto/old_docs/API_docs_v38/methods/channels_updateUsername.md

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---
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title: channels.updateUsername
description: channels.updateUsername parameters, return type and example
---
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## Method: channels.updateUsername
[Back to methods index](index.md)
### Parameters:
| Name | Type | Required |
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|----------|---------------|----------|
|channel|[InputChannel](../types/InputChannel.md) | Optional|
|username|[string](../types/string.md) | Yes|
### Return type: [Bool](../types/Bool.md)
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### Can bots use this method: **NO**
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### Errors this method can return:
| Error | Description |
|----------|---------------|
|CHANNEL_INVALID|The provided channel is invalid|
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|CHANNELS_ADMIN_PUBLIC_TOO_MUCH|You're admin of too many public channels, make some channels private to change the username of this channel|
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|CHAT_ADMIN_REQUIRED|You must be an admin in this chat to do this|
|USERNAME_INVALID|The provided username is not valid|
|USERNAME_OCCUPIED|The provided username is already occupied|
### Example:
```
$MadelineProto = new \danog\MadelineProto\API();
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$MadelineProto->session = 'mySession.madeline';
if (isset($number)) { // Login as a user
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$MadelineProto->phone_login($number);
$code = readline('Enter the code you received: '); // Or do this in two separate steps in an HTTP API
$MadelineProto->complete_phone_login($code);
}
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$Bool = $MadelineProto->channels->updateUsername(['channel' => InputChannel, 'username' => 'string', ]);
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```
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Or, if you're using the [PWRTelegram HTTP API](https://pwrtelegram.xyz):
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### As a user:
POST/GET to `https://api.pwrtelegram.xyz/userTOKEN/channels.updateUsername`
Parameters:
channel - Json encoded InputChannel
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username - Json encoded string
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Or, if you're into Lua:
```
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Bool = channels.updateUsername({channel=InputChannel, username='string', })
```