# AssociateInstanceEventWindow
<a name="API_AssociateInstanceEventWindow"></a>

Associates one or more targets with an event window. Only one type of target (instance IDs, Dedicated Host IDs, or tags) can be specified with an event window.

For more information, see [Define event windows for scheduled events](https://docs.amazonaws.cn/AWSEC2/latest/UserGuide/event-windows.html) in the *Amazon EC2 User Guide*.

## Request Parameters
<a name="API_AssociateInstanceEventWindow_RequestParameters"></a>

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).

 **AssociationTarget**   
One or more targets associated with the specified event window.  
Type: [InstanceEventWindowAssociationRequest](API_InstanceEventWindowAssociationRequest.md) object  
Required: Yes

 **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

 **InstanceEventWindowId**   
The ID of the event window.  
Type: String  
Required: Yes

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

The following elements are returned by the service.

 **instanceEventWindow**   
Information about the event window.  
Type: [InstanceEventWindow](API_InstanceEventWindow.md) object

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

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

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

## See Also
<a name="API_AssociateInstanceEventWindow_SeeAlso"></a>

For more information about using this API in one of the language-specific Amazon SDKs, see the following:
+  [Amazon Command Line Interface V2](https://docs.amazonaws.cn/goto/cli2/ec2-2016-11-15/AssociateInstanceEventWindow) 
+  [Amazon SDK for .NET V4](https://docs.amazonaws.cn/goto/DotNetSDKV4/ec2-2016-11-15/AssociateInstanceEventWindow) 
+  [Amazon SDK for C\$1\$1](https://docs.amazonaws.cn/goto/SdkForCpp/ec2-2016-11-15/AssociateInstanceEventWindow) 
+  [Amazon SDK for Go v2](https://docs.amazonaws.cn/goto/SdkForGoV2/ec2-2016-11-15/AssociateInstanceEventWindow) 
+  [Amazon SDK for Java V2](https://docs.amazonaws.cn/goto/SdkForJavaV2/ec2-2016-11-15/AssociateInstanceEventWindow) 
+  [Amazon SDK for JavaScript V3](https://docs.amazonaws.cn/goto/SdkForJavaScriptV3/ec2-2016-11-15/AssociateInstanceEventWindow) 
+  [Amazon SDK for Kotlin](https://docs.amazonaws.cn/goto/SdkForKotlin/ec2-2016-11-15/AssociateInstanceEventWindow) 
+  [Amazon SDK for PHP V3](https://docs.amazonaws.cn/goto/SdkForPHPV3/ec2-2016-11-15/AssociateInstanceEventWindow) 
+  [Amazon SDK for Python](https://docs.amazonaws.cn/goto/boto3/ec2-2016-11-15/AssociateInstanceEventWindow) 
+  [Amazon SDK for Ruby V3](https://docs.amazonaws.cn/goto/SdkForRubyV3/ec2-2016-11-15/AssociateInstanceEventWindow)