MadelineProtoDocs/old_docs/API_docs_v46/methods/channels_readHistory.md

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---
title: channels.readHistory
description: Mark channel/supergroup history as read
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image: https://docs.madelineproto.xyz/favicons/android-chrome-256x256.png
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---
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# Method: channels.readHistory
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[Back to methods index](index.md)
Mark channel/supergroup history as read
### Parameters:
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| Name | Type | Description | Required |
|----------|---------------|-------------|----------|
|channel|[Username, chat ID, Update, Message or InputChannel](../types/InputChannel.md) | The channel/supergroup | Optional|
|max\_id|[int](../types/int.md) | Maximum message ID to mark as read | Yes|
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### Return type: [Bool](../types/Bool.md)
### Can bots use this method: **NO**
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### MadelineProto Example ([now async for huge speed and parallelism!](https://docs.madelineproto.xyz/docs/ASYNC.html)):
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```php
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if (!file_exists('madeline.php')) {
copy('https://phar.madelineproto.xyz/madeline.php', 'madeline.php');
}
include 'madeline.php';
$MadelineProto = new \danog\MadelineProto\API('session.madeline');
$MadelineProto->start();
$Bool = $MadelineProto->channels->readHistory(['channel' => InputChannel, 'max_id' => int, ]);
```
Or, if you're into Lua:
```lua
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Bool = channels.readHistory({channel=InputChannel, max_id=int, })
```
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### Errors
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| Code | Type | Description |
|------|----------|---------------|
|400|CHANNEL_INVALID|The provided channel is invalid|
|400|CHANNEL_PRIVATE|You haven't joined this channel/supergroup|
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|400|MSG_ID_INVALID|Invalid message ID provided|
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