# Config File Options

If you're making a request to an external import file/url and it requires additional validation you can use the datagrab\_custom\_headers config option. In this example 6 is the import ID to assign these headers to.

```php
$config['datagrab_custom_headers'] = [
    6 => [
        'Content-Type: application/json',
        'Authorization: Bearer YOUR_ACCESS_TOKEN'
    ]
];
```

If you want to disable verifying peers when making a cURL request you can  set this to 'n'.

```php
$config['datagrab_verify_peer'] = 'n';
```

By default DataGrab will write to the `system/user/cache/DataGrab-import.log` file each time an import is executed, and erase the log contents from the previous import and replace it with the currently executing import. If you want to keep a backup of the log files you will want to enable log rotate, which will append a timestamp to the end of of the file. If you do this you may want to consider deleting old backups, which will [require a simple bash script](https://docs.boldminded.com/datagrab/docs/troubleshooting/datagrab-import.log-rotation).

```php
$config['datagrab_rotate_log'] = 'y';
```