# messages.toggleTodoCompleted

Mark one or more items of a [todo list »](/api/todo.md) as completed or not completed.

```tl
updatesTooLong#e317af7e = Updates;
updateShortMessage#313bc7f8 flags:# out:flags.1?true mentioned:flags.4?true media_unread:flags.5?true silent:flags.13?true id:int user_id:long message:string pts:int pts_count:int date:int fwd_from:flags.2?MessageFwdHeader via_bot_id:flags.11?long reply_to:flags.3?MessageReplyHeader entities:flags.7?Vector<MessageEntity> ttl_period:flags.25?int = Updates;
updateShortChatMessage#4d6deea5 flags:# out:flags.1?true mentioned:flags.4?true media_unread:flags.5?true silent:flags.13?true id:int from_id:long chat_id:long message:string pts:int pts_count:int date:int fwd_from:flags.2?MessageFwdHeader via_bot_id:flags.11?long reply_to:flags.3?MessageReplyHeader entities:flags.7?Vector<MessageEntity> ttl_period:flags.25?int = Updates;
updateShort#78d4dec1 update:Update date:int = Updates;
updatesCombined#725b04c3 updates:Vector<Update> users:Vector<User> chats:Vector<Chat> date:int seq_start:int seq:int = Updates;
updates#74ae4240 updates:Vector<Update> users:Vector<User> chats:Vector<Chat> date:int seq:int = Updates;
updateShortSentMessage#9015e101 flags:# out:flags.1?true id:int pts:int pts_count:int date:int media:flags.9?MessageMedia entities:flags.7?Vector<MessageEntity> ttl_period:flags.25?int = Updates;
---functions---
messages.toggleTodoCompleted#d3e03124 peer:InputPeer msg_id:int completed:Vector<int> incompleted:Vector<int> = Updates;
```

### Parameters

| Name | Type | Description |
| --- | :---: | --- |
| **peer** | [InputPeer](/type/InputPeer.md) | Peer where the todo list was posted. |
| **msg\_id** | [int](/type/int.md) | ID of the message with the todo list. |
| **completed** | [Vector](/type/Vector%20t)&lt;[int](/type/int.md)&gt; | Items to mark as completed. |
| **incompleted** | [Vector](/type/Vector%20t)&lt;[int](/type/int.md)&gt; | Items to mark as not completed. |

### Result
[Updates](/type/Updates.md)

### Only users can use this method

### Possible errors

| Code | Type | Description |
| --- | --- | --- |
| 400 | PEER\_ID\_INVALID | The provided peer id is invalid. |

### Related pages

#### [Checklists and to-do lists](/api/todo.md)
Premium users can now create collaborative checklists in any chat to track tasks and coordinate teams — or manage shopping and to-do lis