# GetTransitGatewayPrefixListReferences
<a name="API_GetTransitGatewayPrefixListReferences"></a>

Gets information about the prefix list references in a specified transit gateway route table.

## Request Parameters
<a name="API_GetTransitGatewayPrefixListReferences_RequestParameters"></a>

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).

 **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

 **Filter.N**   
One or more filters. The possible values are:  
+  `attachment.resource-id` - The ID of the resource for the attachment.
+  `attachment.resource-type` - The type of resource for the attachment. Valid values are `vpc` \$1 `vpn` \$1 `direct-connect-gateway` \$1 `peering`.
+  `attachment.transit-gateway-attachment-id` - The ID of the attachment.
+  `is-blackhole` - Whether traffic matching the route is blocked (`true` \$1 `false`).
+  `prefix-list-id` - The ID of the prefix list.
+  `prefix-list-owner-id` - The ID of the owner of the prefix list.
+  `state` - The state of the prefix list reference (`pending` \$1 `available` \$1 `modifying` \$1 `deleting`).
Type: Array of [Filter](API_Filter.md) objects  
Required: No

 **MaxResults**   
The maximum number of results to return with a single call. To retrieve the remaining results, make another call with the returned `nextToken` value.  
Type: Integer  
Valid Range: Minimum value of 5. Maximum value of 1000.  
Required: No

 **NextToken**   
The token for the next page of results.  
Type: String  
Required: No

 **TransitGatewayRouteTableId**   
The ID of the transit gateway route table.  
Type: String  
Required: Yes

## Response Elements
<a name="API_GetTransitGatewayPrefixListReferences_ResponseElements"></a>

The following elements are returned by the service.

 **nextToken**   
The token to use to retrieve the next page of results. This value is `null` when there are no more results to return.  
Type: String

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

 **transitGatewayPrefixListReferenceSet**   
Information about the prefix list references.  
Type: Array of [TransitGatewayPrefixListReference](API_TransitGatewayPrefixListReference.md) objects

## Errors
<a name="API_GetTransitGatewayPrefixListReferences_Errors"></a>

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

## Examples
<a name="API_GetTransitGatewayPrefixListReferences_Examples"></a>

### Example
<a name="API_GetTransitGatewayPrefixListReferences_Example_1"></a>

This example gets the prefix list references for the specified transit gateway route table.

#### Sample Request
<a name="API_GetTransitGatewayPrefixListReferences_Example_1_Request"></a>

```
https://ec2.amazonaws.com/?Action=GetTransitGatewayPrefixListReferences
&TransitGatewayRouteTableId=tgw-rtb-0f98a0a5d09abcabc
&AUTHPARAMS
```

#### Sample Response
<a name="API_GetTransitGatewayPrefixListReferences_Example_1_Response"></a>

```
<GetTransitGatewayPrefixListReferencesResponse xmlns="http://ec2.amazonaws.com/doc/2016-11-15/">
    <requestId>b194523f-807a-4a41-920a-example</requestId>
    <transitGatewayPrefixListReferenceSet>
        <item>
            <blackhole>false</blackhole>
            <prefixListId>pl-001122334455aabbc</prefixListId>
            <prefixListOwnerId>123456789012</prefixListOwnerId>
            <state>available</state>
            <transitGatewayAttachment>
                <resourceId>vpn-12312312312312312</resourceId>
                <resourceType>vpn</resourceType>
                <transitGatewayAttachmentId>tgw-attach-01234567abcabcabc</transitGatewayAttachmentId>
            </transitGatewayAttachment>
            <transitGatewayRouteTableId>tgw-rtb-0f98a0a5d09abcabc</transitGatewayRouteTableId>
        </item>
    </transitGatewayPrefixListReferenceSet>
</GetTransitGatewayPrefixListReferencesResponse>
```

## See Also
<a name="API_GetTransitGatewayPrefixListReferences_SeeAlso"></a>

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/GetTransitGatewayPrefixListReferences) 
+  [AWS SDK for .NET V4](https://docs.aws.amazon.com/goto/DotNetSDKV4/ec2-2016-11-15/GetTransitGatewayPrefixListReferences) 
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/ec2-2016-11-15/GetTransitGatewayPrefixListReferences) 
+  [AWS SDK for Go v2](https://docs.aws.amazon.com/goto/SdkForGoV2/ec2-2016-11-15/GetTransitGatewayPrefixListReferences) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/ec2-2016-11-15/GetTransitGatewayPrefixListReferences) 
+  [AWS SDK for JavaScript V3](https://docs.aws.amazon.com/goto/SdkForJavaScriptV3/ec2-2016-11-15/GetTransitGatewayPrefixListReferences) 
+  [AWS SDK for Kotlin](https://docs.aws.amazon.com/goto/SdkForKotlin/ec2-2016-11-15/GetTransitGatewayPrefixListReferences) 
+  [AWS SDK for PHP V3](https://docs.aws.amazon.com/goto/SdkForPHPV3/ec2-2016-11-15/GetTransitGatewayPrefixListReferences) 
+  [AWS SDK for Python](https://docs.aws.amazon.com/goto/boto3/ec2-2016-11-15/GetTransitGatewayPrefixListReferences) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/ec2-2016-11-15/GetTransitGatewayPrefixListReferences)