# AssociateApplications
<a name="API_AssociateApplications"></a>

When you associate, or link, an application with a stream group, then Amazon GameLift Streams can launch the application using the stream group's allocated compute resources. The stream group must be in `ACTIVE` status. You can reverse this action by using [DisassociateApplications](https://docs.aws.amazon.com/gameliftstreams/latest/apireference/API_DisassociateApplications.html).

If a stream group does not already have a linked application, Amazon GameLift Streams will automatically assign the first application provided in `ApplicationIdentifiers` as the default.

## Request Syntax
<a name="API_AssociateApplications_RequestSyntax"></a>

```
POST /streamgroups/Identifier/associations HTTP/1.1
Content-type: application/json

{
   "ApplicationIdentifiers": [ "string" ]
}
```

## URI Request Parameters
<a name="API_AssociateApplications_RequestParameters"></a>

The request uses the following URI parameters.

 ** [Identifier](#API_AssociateApplications_RequestSyntax) **   <a name="gameliftstreams-AssociateApplications-request-uri-Identifier"></a>
A stream group to associate to the applications.  
This value is an [Amazon Resource Name (ARN)](https://docs.aws.amazon.com/IAM/latest/UserGuide/reference-arns.html) or ID that uniquely identifies the stream group resource. Example ARN: `arn:aws:gameliftstreams:us-west-2:111122223333:streamgroup/sg-1AB2C3De4`. Example ID: `sg-1AB2C3De4`.   
Length Constraints: Minimum length of 1. Maximum length of 128.  
Pattern: `(^[a-zA-Z0-9-]+$)|(^arn:aws:gameliftstreams:([^: ]*):([0-9]{12}):([^: ]*)$)`   
Required: Yes

## Request Body
<a name="API_AssociateApplications_RequestBody"></a>

The request accepts the following data in JSON format.

 ** [ApplicationIdentifiers](#API_AssociateApplications_RequestSyntax) **   <a name="gameliftstreams-AssociateApplications-request-ApplicationIdentifiers"></a>
A set of applications to associate with the stream group.  
This value is a set of either [Amazon Resource Names (ARN)](https://docs.aws.amazon.com/IAM/latest/UserGuide/reference-arns.html) or IDs that uniquely identify application resources. Example ARN: `arn:aws:gameliftstreams:us-west-2:111122223333:application/a-9ZY8X7Wv6`. Example ID: `a-9ZY8X7Wv6`.   
Type: Array of strings  
Array Members: Minimum number of 1 item. Maximum number of 50 items.  
Length Constraints: Minimum length of 1. Maximum length of 128.  
Pattern: `(^[a-zA-Z0-9-]+$)|(^arn:aws:gameliftstreams:([^: ]*):([0-9]{12}):([^: ]*)$)`   
Required: Yes

## Response Syntax
<a name="API_AssociateApplications_ResponseSyntax"></a>

```
HTTP/1.1 200
Content-type: application/json

{
   "ApplicationArns": [ "string" ],
   "Arn": "string"
}
```

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

If the action is successful, the service sends back an HTTP 200 response.

The following data is returned in JSON format by the service.

 ** [ApplicationArns](#API_AssociateApplications_ResponseSyntax) **   <a name="gameliftstreams-AssociateApplications-response-ApplicationArns"></a>
A set of applications that are associated to the stream group.  
This value is a set of [Amazon Resource Names (ARNs)](https://docs.aws.amazon.com/IAM/latest/UserGuide/reference-arns.html) that uniquely identify application resources. Example ARN: `arn:aws:gameliftstreams:us-west-2:111122223333:application/a-9ZY8X7Wv6`.   
Type: Array of strings  
Length Constraints: Minimum length of 1. Maximum length of 128.  
Pattern: `arn:aws:gameliftstreams:([^: ]*):([0-9]{12}):([^: ]*)` 

 ** [Arn](#API_AssociateApplications_ResponseSyntax) **   <a name="gameliftstreams-AssociateApplications-response-Arn"></a>
A stream group that is associated to the applications.  
This value is an [Amazon Resource Name (ARN)](https://docs.aws.amazon.com/IAM/latest/UserGuide/reference-arns.html) that uniquely identifies the stream group resource. Example ARN: `arn:aws:gameliftstreams:us-west-2:111122223333:streamgroup/sg-1AB2C3De4`.   
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 128.  
Pattern: `arn:aws:gameliftstreams:([^: ]*):([0-9]{12}):([^: ]*)` 

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

For information about the errors that are common to all actions, see [Common Error Types](CommonErrors.md).

 [AccessDeniedException](API_AccessDeniedException.md)   
You don't have the required permissions to access this Amazon GameLift Streams resource. Correct the permissions before you try again.    
 ** Message **   
Description of the error.
HTTP Status Code: 403

 [InternalServerException](API_InternalServerException.md)   
The service encountered an internal error and is unable to complete the request.    
 ** Message **   
Description of the error.
HTTP Status Code: 500

 [ResourceNotFoundException](API_ResourceNotFoundException.md)   
The resource specified in the request was not found. Correct the request before you try again.    
 ** Message **   
Description of the error.
HTTP Status Code: 404

 [ServiceQuotaExceededException](API_ServiceQuotaExceededException.md)   
The request would cause the resource to exceed an allowed service quota. Resolve the issue before you try again.    
 ** Message **   
Description of the error.
HTTP Status Code: 402

 [ThrottlingException](API_ThrottlingException.md)   
The request was denied due to request throttling. Retry the request after the suggested wait time.    
 ** Message **   
Description of the error.
HTTP Status Code: 429

 [ValidationException](API_ValidationException.md)   
One or more parameter values in the request fail to satisfy the specified constraints. Correct the invalid parameter values before retrying the request.    
 ** Message **   
Description of the error.
HTTP Status Code: 400

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

### CLI Example
<a name="API_AssociateApplications_Example_1"></a>

The following example shows how to use the AWS CLI to associate multiple applications to a stream group.

#### Sample Request
<a name="API_AssociateApplications_Example_1_Request"></a>

```
aws gameliftstreams associate-applications \
    --identifier sg-1AB2C3De4 \
    --application-identifiers a-9ZY8X7Wv6 a-1Z78C7Wv6
```

## See Also
<a name="API_AssociateApplications_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/gameliftstreams-2018-05-10/AssociateApplications) 
+  [AWS SDK for .NET V4](https://docs.aws.amazon.com/goto/DotNetSDKV4/gameliftstreams-2018-05-10/AssociateApplications) 
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/gameliftstreams-2018-05-10/AssociateApplications) 
+  [AWS SDK for Go v2](https://docs.aws.amazon.com/goto/SdkForGoV2/gameliftstreams-2018-05-10/AssociateApplications) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/gameliftstreams-2018-05-10/AssociateApplications) 
+  [AWS SDK for JavaScript V3](https://docs.aws.amazon.com/goto/SdkForJavaScriptV3/gameliftstreams-2018-05-10/AssociateApplications) 
+  [AWS SDK for Kotlin](https://docs.aws.amazon.com/goto/SdkForKotlin/gameliftstreams-2018-05-10/AssociateApplications) 
+  [AWS SDK for PHP V3](https://docs.aws.amazon.com/goto/SdkForPHPV3/gameliftstreams-2018-05-10/AssociateApplications) 
+  [AWS SDK for Python](https://docs.aws.amazon.com/goto/boto3/gameliftstreams-2018-05-10/AssociateApplications) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/gameliftstreams-2018-05-10/AssociateApplications)