Change or remove the username of a supergroup/channel
boolFalse#bc799737 = Bool;
boolTrue#997275b5 = Bool;
---functions---
channels.updateUsername#3514b3de channel:InputChannel username:string = Bool;
Parameters
| Name | Type | Description | 
| channel | InputChannel | Channel | 
| username | string | New username, pass an empty string to remove the username | 
Result
Bool
Only users can use this method
Possible errors
| Code | Type | Description | 
| 400 | CHANNELS_ADMIN_PUBLIC_TOO_MUCH | You're admin of too many public channels, make some channels private to change the username of this channel. | 
| 400 | CHANNEL_INVALID | The provided channel is invalid. | 
| 400 | CHANNEL_PRIVATE | You haven't joined this channel/supergroup. | 
| 403 | CHAT_ADMIN_REQUIRED | You must be an admin in this chat to do this. | 
| 400 | CHAT_NOT_MODIFIED | No changes were made to chat information because the new information you passed is identical to the current information. | 
| 403 | CHAT_WRITE_FORBIDDEN | You can't write in this chat. | 
| 400 | USERNAME_INVALID | The provided username is not valid. | 
| 400 | USERNAME_NOT_MODIFIED | The username was not modified. | 
| 400 | USERNAME_OCCUPIED | The provided username is already occupied. | 
| 400 | USERNAME_PURCHASE_AVAILABLE | The specified username can be purchased on https://fragment.com. |