This is the new *Amazon CloudFormation Template Reference Guide*. Please update your bookmarks and links. For help getting started with CloudFormation, see the [Amazon CloudFormation User Guide](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/Welcome.html).

# AWS::VpcLattice::ServiceNetworkServiceAssociation
<a name="aws-resource-vpclattice-servicenetworkserviceassociation"></a>

Associates the specified service with the specified service network. For more information, see [Manage service associations](https://docs.amazonaws.cn/vpc-lattice/latest/ug/service-network-associations.html#service-network-service-associations) in the *Amazon VPC Lattice User Guide*.

You can't use this operation if the service and service network are already associated or if there is a disassociation or deletion in progress. If the association fails, you can retry the operation by deleting the association and recreating it.

You cannot associate a service and service network that are shared with a caller. The caller must own either the service or the service network.

As a result of this operation, the association is created in the service network account and the association owner account.

## Syntax
<a name="aws-resource-vpclattice-servicenetworkserviceassociation-syntax"></a>

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

### JSON
<a name="aws-resource-vpclattice-servicenetworkserviceassociation-syntax.json"></a>

```
{
  "Type" : "AWS::VpcLattice::ServiceNetworkServiceAssociation",
  "Properties" : {
      "[DnsEntry](#cfn-vpclattice-servicenetworkserviceassociation-dnsentry)" : {{DnsEntry}},
      "[ServiceIdentifier](#cfn-vpclattice-servicenetworkserviceassociation-serviceidentifier)" : {{String}},
      "[ServiceNetworkIdentifier](#cfn-vpclattice-servicenetworkserviceassociation-servicenetworkidentifier)" : {{String}},
      "[Tags](#cfn-vpclattice-servicenetworkserviceassociation-tags)" : {{[ Tag, ... ]}}
    }
}
```

### YAML
<a name="aws-resource-vpclattice-servicenetworkserviceassociation-syntax.yaml"></a>

```
Type: AWS::VpcLattice::ServiceNetworkServiceAssociation
Properties:
  [DnsEntry](#cfn-vpclattice-servicenetworkserviceassociation-dnsentry): {{
    DnsEntry}}
  [ServiceIdentifier](#cfn-vpclattice-servicenetworkserviceassociation-serviceidentifier): {{String}}
  [ServiceNetworkIdentifier](#cfn-vpclattice-servicenetworkserviceassociation-servicenetworkidentifier): {{String}}
  [Tags](#cfn-vpclattice-servicenetworkserviceassociation-tags): {{
    - Tag}}
```

## Properties
<a name="aws-resource-vpclattice-servicenetworkserviceassociation-properties"></a>

`DnsEntry`  <a name="cfn-vpclattice-servicenetworkserviceassociation-dnsentry"></a>
The DNS information of the service.  
*Required*: No  
*Type*: [DnsEntry](aws-properties-vpclattice-servicenetworkserviceassociation-dnsentry.md)  
*Update requires*: [No interruption](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`ServiceIdentifier`  <a name="cfn-vpclattice-servicenetworkserviceassociation-serviceidentifier"></a>
The ID or ARN of the service.  
*Required*: No  
*Type*: String  
*Pattern*: `^((svc-[0-9a-z]{17})|(arn:[a-z0-9\-]+:vpc-lattice:[a-zA-Z0-9\-]+:\d{12}:service/svc-[0-9a-z]{17}))$`  
*Minimum*: `20`  
*Maximum*: `2048`  
*Update requires*: [Replacement](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)

`ServiceNetworkIdentifier`  <a name="cfn-vpclattice-servicenetworkserviceassociation-servicenetworkidentifier"></a>
The ID or ARN of the service network. You must use an ARN if the resources are in different accounts.  
*Required*: No  
*Type*: String  
*Pattern*: `^((sn-[0-9a-z]{17})|(arn:[a-z0-9\-]+:vpc-lattice:[a-zA-Z0-9\-]+:\d{12}:servicenetwork/sn-[0-9a-z]{17}))$`  
*Minimum*: `20`  
*Maximum*: `2048`  
*Update requires*: [Replacement](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)

`Tags`  <a name="cfn-vpclattice-servicenetworkserviceassociation-tags"></a>
The tags for the association.  
*Required*: No  
*Type*: Array of [Tag](aws-properties-vpclattice-servicenetworkserviceassociation-tag.md)  
*Minimum*: `0`  
*Maximum*: `50`  
*Update requires*: [No interruption](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

## Return values
<a name="aws-resource-vpclattice-servicenetworkserviceassociation-return-values"></a>

### Ref
<a name="aws-resource-vpclattice-servicenetworkserviceassociation-return-values-ref"></a>

When you pass the logical ID of this resource to the intrinsic `Ref` function, `Ref` returns the Amazon Resource Name (ARN) of the association.

For more information about using the `Ref` function, see [https://docs.amazonaws.cn/AWSCloudFormation/latest/TemplateReference/intrinsic-function-reference-ref.html](https://docs.amazonaws.cn/AWSCloudFormation/latest/TemplateReference/intrinsic-function-reference-ref.html).

### Fn::GetAtt
<a name="aws-resource-vpclattice-servicenetworkserviceassociation-return-values-fn--getatt"></a>

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.amazonaws.cn/AWSCloudFormation/latest/TemplateReference/intrinsic-function-reference-getatt.html](https://docs.amazonaws.cn/AWSCloudFormation/latest/TemplateReference/intrinsic-function-reference-getatt.html).

#### 
<a name="aws-resource-vpclattice-servicenetworkserviceassociation-return-values-fn--getatt-fn--getatt"></a>

`Arn`  <a name="Arn-fn::getatt"></a>
The Amazon Resource Name (ARN) of the association between the service network and the service.

`CreatedAt`  <a name="CreatedAt-fn::getatt"></a>
The date and time that the association was created, specified in ISO-8601 format.

`DnsEntry.DomainName`  <a name="DnsEntry.DomainName-fn::getatt"></a>
The domain name of the service.

`DnsEntry.HostedZoneId`  <a name="DnsEntry.HostedZoneId-fn::getatt"></a>
The ID of the hosted zone.

`Id`  <a name="Id-fn::getatt"></a>
The ID of the of the association between the service network and the service.

`ServiceArn`  <a name="ServiceArn-fn::getatt"></a>
The Amazon Resource Name (ARN) of the service.

`ServiceId`  <a name="ServiceId-fn::getatt"></a>
The ID of the service.

`ServiceName`  <a name="ServiceName-fn::getatt"></a>
The name of the service.

`ServiceNetworkArn`  <a name="ServiceNetworkArn-fn::getatt"></a>
The Amazon Resource Name (ARN) of the service network

`ServiceNetworkId`  <a name="ServiceNetworkId-fn::getatt"></a>
The ID of the service network.

`ServiceNetworkName`  <a name="ServiceNetworkName-fn::getatt"></a>
The name of the service network.

`Status`  <a name="Status-fn::getatt"></a>
The status of the association between the service network and the service.