# RestoreManagedPrefixListVersion


Restores the entries from a previous version of a managed prefix list to a new version of the prefix list.

## Request Parameters


The following parameters are for this specific action. For more information about required and optional parameters that are common to all actions, see [Common Query Parameters](CommonParameters.md).

 **CurrentVersion**   
The current version number for the prefix list.  
Type: Long  
Required: Yes

 **DryRun**   
Checks whether you have the required permissions for the action, without actually making the request, and provides an error response. If you have the required permissions, the error response is `DryRunOperation`. Otherwise, it is `UnauthorizedOperation`.  
Type: Boolean  
Required: No

 **PrefixListId**   
The ID of the prefix list.  
Type: String  
Required: Yes

 **PreviousVersion**   
The version to restore.  
Type: Long  
Required: Yes

## Response Elements


The following elements are returned by the service.

 **prefixList**   
Information about the prefix list.  
Type: [ManagedPrefixList](API_ManagedPrefixList.md) object

 **requestId**   
The ID of the request.  
Type: String

## Errors


For information about the errors that are common to all actions, see [Common client error codes](errors-overview.md#CommonErrors).

## Examples


### Example


This example restores the entries from version 1 of the specified prefix list.

#### Sample Request


```
https://ec2.amazonaws.com/?Action=RestoreManagedPrefixListVersion
&PrefixListId=pl-0123123123123aabb
&CurrentVersion=3
&PreviousVersion=1
&AUTHPARAMS
```

#### Sample Response


```
<RestoreManagedPrefixListVersionResponse xmlns="http://ec2.amazonaws.com/doc/2016-11-15/">
    <requestId>aeb3faff-8938-41a0-9747-example</requestId>
    <prefixList>
        <addressFamily>IPv4</addressFamily>
        <maxEntries>10</maxEntries>
        <ownerId>123456789012</ownerId>
        <prefixListArn>arn:aws:ec2:us-east-1:123456789012:prefix-list/pl-0123123123123aabb</prefixListArn>
        <prefixListId>pl-0123123123123aabb</prefixListId>
        <prefixListName>tgw-attachments</prefixListName>
        <state>restore-in-progress</state>
        <version>3</version>
    </prefixList>
</RestoreManagedPrefixListVersionResponse>
```

## See Also


For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS Command Line Interface V2](https://docs.aws.amazon.com/goto/cli2/ec2-2016-11-15/RestoreManagedPrefixListVersion) 
+  [AWS SDK for .NET V4](https://docs.aws.amazon.com/goto/DotNetSDKV4/ec2-2016-11-15/RestoreManagedPrefixListVersion) 
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/ec2-2016-11-15/RestoreManagedPrefixListVersion) 
+  [AWS SDK for Go v2](https://docs.aws.amazon.com/goto/SdkForGoV2/ec2-2016-11-15/RestoreManagedPrefixListVersion) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/ec2-2016-11-15/RestoreManagedPrefixListVersion) 
+  [AWS SDK for JavaScript V3](https://docs.aws.amazon.com/goto/SdkForJavaScriptV3/ec2-2016-11-15/RestoreManagedPrefixListVersion) 
+  [AWS SDK for Kotlin](https://docs.aws.amazon.com/goto/SdkForKotlin/ec2-2016-11-15/RestoreManagedPrefixListVersion) 
+  [AWS SDK for PHP V3](https://docs.aws.amazon.com/goto/SdkForPHPV3/ec2-2016-11-15/RestoreManagedPrefixListVersion) 
+  [AWS SDK for Python](https://docs.aws.amazon.com/goto/boto3/ec2-2016-11-15/RestoreManagedPrefixListVersion) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/ec2-2016-11-15/RestoreManagedPrefixListVersion)