This is the new *CloudFormation Template Reference Guide*. Please update your bookmarks and links. For help getting started with CloudFormation, see the [AWS CloudFormation User Guide](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/Welcome.html).
# AWS::EC2::SecurityGroupVpcAssociation

A security group association with a VPC.
## Syntax

To declare this entity in your CloudFormation template, use the following syntax:
### JSON

```
{
 "Type" : "AWS::EC2::SecurityGroupVpcAssociation",
 "Properties" : {
 "[GroupId](#cfn-ec2-securitygroupvpcassociation-groupid)" : {{String}},
 "[VpcId](#cfn-ec2-securitygroupvpcassociation-vpcid)" : {{String}}
 }
}
```
### YAML

```
Type: AWS::EC2::SecurityGroupVpcAssociation
Properties:
 [GroupId](#cfn-ec2-securitygroupvpcassociation-groupid): {{String}}
 [VpcId](#cfn-ec2-securitygroupvpcassociation-vpcid): {{String}}
```
## Properties

`GroupId` 
The association's security group ID. 
*Required*: Yes 
*Type*: String 
*Update requires*: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)
`VpcId` 
The association's VPC ID. 
*Required*: Yes 
*Type*: String 
*Update requires*: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)
## Return values

### Ref

When you pass the logical ID of this resource to the intrinsic `Ref` function, `Ref` returns a concatenation of the security group ID and VPC ID in the format `sg-id|vpc-id`. Example:`sg-a1b2c3d4e5a6b7d8e|vpc-a1b2c3d4e5a6b7d8e`.
For more information about using the `Ref` function, see [https://docs.aws.amazon.com/AWSCloudFormation/latest/TemplateReference/intrinsic-function-reference-ref.html](https://docs.aws.amazon.com/AWSCloudFormation/latest/TemplateReference/intrinsic-function-reference-ref.html).
### Fn::GetAtt

The `Fn::GetAtt` intrinsic function returns a value for a specified attribute of this type. The following are the available attributes and sample return values.
For more information about using the `Fn::GetAtt` intrinsic function, see [https://docs.aws.amazon.com/AWSCloudFormation/latest/TemplateReference/intrinsic-function-reference-getatt.html](https://docs.aws.amazon.com/AWSCloudFormation/latest/TemplateReference/intrinsic-function-reference-getatt.html).
#### 

`State` 
The association's state.
`StateReason` 
The association's state reason.
`VpcOwnerId` 
The AWS account ID of the owner of the VPC.</div><div class="naked_ctrl">
<form action="/index.cgi/contrast" method="get" name="gate">
<p><a href="http://altstyle.alfasado.net">AltStyle</a> によって変換されたページ <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/TemplateReference/aws-resource-ec2-securitygroupvpcassociation.md">(-&gt;オリジナル)</a>
/ <label>アドレス: <input type="text" name="naked_post_url" value="https://docs.aws.amazon.com/AWSCloudFormation/latest/TemplateReference/aws-resource-ec2-securitygroupvpcassociation.md" size="22" /></label> <label>モード: <select name="naked_post_mode">
<option value="default">デフォルト</option>
<option value="speech">音声ブラウザ</option>
<option value="ruby">ルビ付き</option>
<option value="contrast" selected="selected">配色反転</option>
<option value="larger-text">文字拡大</option>
<option value="mobile">モバイル</option>
</select>
<input type="submit" value="表示" />
</p>
</form>
</div>