# DescribeSecurityGroupReferences
<a name="API_DescribeSecurityGroupReferences"></a>

Describes the VPCs on the other side of a VPC peering or Transit Gateway connection that are referencing the security groups you've specified in this request.

## Request Parameters
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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

 **GroupId.N**   
The IDs of the security groups in your account.  
Type: Array of strings  
Required: Yes

## Response Elements
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The following elements are returned by the service.

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

 **securityGroupReferenceSet**   
Information about the VPCs with the referencing security groups.  
Type: Array of [SecurityGroupReference](API_SecurityGroupReference.md) objects

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

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

## Examples
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### Example 1
<a name="API_DescribeSecurityGroupReferences_Example_1"></a>

This example describes the security group references for sg-11aa22bb. The response indicates that this security group is referenced by a security group in VPC vpc-1a2b3c4d.

#### Sample Request
<a name="API_DescribeSecurityGroupReferences_Example_1_Request"></a>

```
https://ec2.amazonaws.com/?Action=DescribeSecurityGroupReferences
&GroupId.1=sg-11aa22bb
&AUTHPARAMS
```

#### Sample Response
<a name="API_DescribeSecurityGroupReferences_Example_1_Response"></a>

```
<DescribeSecurityGroupReferencesResponse xmlns="http://ec2.amazonaws.com/doc/2016-11-15/">
    <requestId>19744c88-baa2-45df-905f-example</requestId>
    <securityGroupReferenceSet>
        <item>
            <referencingVpcId>vpc-1a2b3c4d</referencingVpcId>
            <vpcPeeringConnectionId>pcx-b04deed9</vpcPeeringConnectionId>
            <groupId>sg-11aa22bb</groupId>
        </item>
    </securityGroupReferenceSet>
</DescribeSecurityGroupReferencesResponse>
```

### Example 2
<a name="API_DescribeSecurityGroupReferences_Example_2"></a>

This example describes the security group references for sg-11aa22bb and sg-1111aaaa.

#### Sample Request
<a name="API_DescribeSecurityGroupReferences_Example_2_Request"></a>

```
https://ec2.amazonaws.com/?Action=DescribeSecurityGroupReferences
&GroupId.1=sg-11aa22bb
&GroupId.2=sg-1111aaaa
&AUTHPARAMS
```

#### Sample Response
<a name="API_DescribeSecurityGroupReferences_Example_2_Response"></a>

```
<DescribeSecurityGroupReferencesResponse xmlns="http://ec2.amazonaws.com/doc/2016-11-15/">
    <requestId>d1835dca-61c1-459d-99cb-example</requestId>
    <securityGroupReferenceSet>
        <item>
            <referencingVpcId>vpc-81326ae4</referencingVpcId>
            <vpcPeeringConnectionId>pcx-b04deed9</vpcPeeringConnectionId>
            <groupId>sg-11aa22bb</groupId>
        </item>
        <item>
            <referencingVpcId>vpc-1a2b3c4d</referencingVpcId>
            <vpcPeeringConnectionId>pcx-aabbccdd</vpcPeeringConnectionId>
            <groupId>sg-1111aaaa</groupId>
        </item>
    </securityGroupReferenceSet>
</DescribeSecurityGroupReferencesResponse>
```

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