> For the complete documentation index, see [llms.txt](https://painor.gitbook.io/gramjs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://painor.gitbook.io/gramjs/registration-and-authorization/auth.importauthorization.md).

# auth.importAuthorization

Logs in a user using a key transmitted from his native data-centre.

## Example

{% tabs %}
{% tab title="Javascript" %}

```javascript
const {Api, TelegramClient} = require('telegram');
const {StringSession} = require('telegram/sessions');

const session = new StringSession('');
const client = new TelegramClient(session, apiId, apiHash, {});

(async function run() {
    const result = await client.invoke(new Api.auth.importAuthorization({
        id: 4965292,
        bytes: Buffer.from('some bytes here'),
        }));
    console.log(result); // prints the result
})();
```

{% endtab %}

{% tab title="TypeScript" %}

```typescript
import {Api, TelegramClient} from 'telegram';
import {StringSession} from 'telegram/sessions';

const session = new StringSession('');
const client = new TelegramClient(session, apiId, apiHash, {});

(async function run() {
    const result: Api.auth.Authorization = await client.invoke(new Api.auth.importAuthorization({
        id: 4965292,
        bytes: Buffer.from('some bytes here'),
        }));
    console.log(result); // prints the result
})();
```

{% endtab %}
{% endtabs %}

## TL schema

```
auth.authorization#cd050916 flags:# tmp_sessions:flags.0?int user:User = auth.Authorization;
auth.authorizationSignUpRequired#44747e9a flags:# terms_of_service:flags.0?help.TermsOfService = auth.Authorization;
---functions---
auth.importAuthorization#e3ef9613 id:int bytes:bytes = auth.Authorization;
```

## Parameters

|    Name   | Type                                          | Description       |
| :-------: | --------------------------------------------- | ----------------- |
|   **id**  | [int](https://core.telegram.org/type/int)     | User ID           |
| **bytes** | [bytes](https://core.telegram.org/type/bytes) | Authorization key |

## Result

[auth.Authorization](https://core.telegram.org/type/auth.Authorization)

## Possible errors

| Code | Type                 | Description                           |
| :--: | -------------------- | ------------------------------------- |
|  400 | AUTH\_BYTES\_INVALID | The provided authorization is invalid |
|  400 | USER\_ID\_INVALID    | The provided user ID is invalid       |

## Can bots use this methd ?

### yes

## Related pages