# AWS::VpcLattice::ServiceNetworkVpcAssociation Associates a VPC with a service network. ## Syntax To declare this entity in your AWS CloudFormation template, use the following syntax: ### JSON
{
"Type" : "AWS::VpcLattice::ServiceNetworkVpcAssociation",
"Properties" : {
"SecurityGroupIds" : [ String, ... ],
"ServiceNetworkIdentifier" : String,
"VpcIdentifier" : String,
"Tags" : [ Tag, ... ]
}
}
### YAML
Type: AWS::VpcLattice::ServiceNetworkVpcAssociation
Properties:
SecurityGroupIds:
- String
ServiceNetworkIdentifier: String
VpcIdentifier: String
Tags:
- Tag
## Properties
#### SecurityGroupIds
_Required_: No
_Type_: List of String
_Update requires_: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)
#### ServiceNetworkIdentifier
_Required_: No
_Type_: String
_Minimum Length_: 20
_Maximum Length_: 2048
_Pattern_: ^((sn-[0-9a-z]{17})|(arn:[a-z0-9\-]+:vpc-lattice:[a-zA-Z0-9\-]+:\d{12}:servicenetwork/sn-[0-9a-z]{17}))$
_Update requires_: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)
#### VpcIdentifier
_Required_: No
_Type_: String
_Minimum Length_: 5
_Maximum Length_: 2048
_Pattern_: ^vpc-(([0-9a-z]{8})|([0-9a-z]{17}))$
_Update requires_: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)
#### Tags
_Required_: No
_Type_: List of Tag
_Update requires_: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)
## Return Values
### Ref
When you pass the logical ID of this resource to the intrinsic `Ref` function, Ref returns the Arn.
### 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 [Fn::GetAtt](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/intrinsic-function-reference-getatt.html).
#### Arn
Returns the Arn value.
#### CreatedAt
Returns the CreatedAt value.
#### Id
Returns the Id value.
#### ServiceNetworkArn
Returns the ServiceNetworkArn value.
#### ServiceNetworkId
Returns the ServiceNetworkId value.
#### ServiceNetworkName
Returns the ServiceNetworkName value.
#### Status
Returns the Status value.
#### VpcId
Returns the VpcId value.