# ModifyEventSubscription
<a name="API_ModifyEventSubscription"></a>

Modifies an existing Amazon DocumentDB event notification subscription.

## Request Parameters
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 For information about the parameters that are common to all actions, see [Common Parameters](CommonParameters.md).

 ** SubscriptionName **   
The name of the Amazon DocumentDB event notification subscription.  
Type: String  
Required: Yes

 ** Enabled **   
 A Boolean value; set to `true` to activate the subscription.   
Type: Boolean  
Required: No

 **EventCategories.EventCategory.N**   
 A list of event categories for a `SourceType` that you want to subscribe to.  
Type: Array of strings  
Required: No

 ** SnsTopicArn **   
The Amazon Resource Name (ARN) of the SNS topic created for event notification. The ARN is created by Amazon SNS when you create a topic and subscribe to it.  
Type: String  
Required: No

 ** SourceType **   
The type of source that is generating the events. For example, if you want to be notified of events generated by an instance, set this parameter to `db-instance`. If this value is not specified, all events are returned.  
Valid values: `db-instance`, `db-parameter-group`, `db-security-group`   
Type: String  
Required: No

## Response Elements
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The following element is returned by the service.

 ** EventSubscription **   
Detailed information about an event to which you have subscribed.  
Type: [EventSubscription](API_EventSubscription.md) object

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

 ** EventSubscriptionQuotaExceeded **   
You have reached the maximum number of event subscriptions.   
HTTP Status Code: 400

 ** SNSInvalidTopic **   
Amazon SNS has responded that there is a problem with the specified topic.   
HTTP Status Code: 400

 ** SNSNoAuthorization **   
You do not have permission to publish to the SNS topic Amazon Resource Name (ARN).   
HTTP Status Code: 400

 ** SNSTopicArnNotFound **   
The SNS topic Amazon Resource Name (ARN) does not exist.   
HTTP Status Code: 404

 ** SubscriptionCategoryNotFound **   
The provided category does not exist.   
HTTP Status Code: 404

 ** SubscriptionNotFound **   
The subscription name does not exist.   
HTTP Status Code: 404

## See Also
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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/docdb-2014-10-31/ModifyEventSubscription) 
+  [AWS SDK for .NET V4](https://docs.aws.amazon.com/goto/DotNetSDKV4/docdb-2014-10-31/ModifyEventSubscription) 
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/docdb-2014-10-31/ModifyEventSubscription) 
+  [AWS SDK for Go v2](https://docs.aws.amazon.com/goto/SdkForGoV2/docdb-2014-10-31/ModifyEventSubscription) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/docdb-2014-10-31/ModifyEventSubscription) 
+  [AWS SDK for JavaScript V3](https://docs.aws.amazon.com/goto/SdkForJavaScriptV3/docdb-2014-10-31/ModifyEventSubscription) 
+  [AWS SDK for Kotlin](https://docs.aws.amazon.com/goto/SdkForKotlin/docdb-2014-10-31/ModifyEventSubscription) 
+  [AWS SDK for PHP V3](https://docs.aws.amazon.com/goto/SdkForPHPV3/docdb-2014-10-31/ModifyEventSubscription) 
+  [AWS SDK for Python](https://docs.aws.amazon.com/goto/boto3/docdb-2014-10-31/ModifyEventSubscription) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/docdb-2014-10-31/ModifyEventSubscription)