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

Modifies an existing Amazon Redshift event notification subscription.

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

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

 ** SubscriptionName **   
The name of the modified Amazon Redshift event notification subscription.  
Type: String  
Length Constraints: Maximum length of 2147483647.  
Required: Yes

 ** Enabled **   
A Boolean value indicating if the subscription is enabled. `true` indicates the subscription is enabled   
Type: Boolean  
Required: No

 **EventCategories.EventCategory.N**   
Specifies the Amazon Redshift event categories to be published by the event notification subscription.  
Values: configuration, management, monitoring, security, pending  
Type: Array of strings  
Length Constraints: Maximum length of 2147483647.  
Required: No

 ** Severity **   
Specifies the Amazon Redshift event severity to be published by the event notification subscription.  
Values: ERROR, INFO  
Type: String  
Length Constraints: Maximum length of 2147483647.  
Required: No

 ** SnsTopicArn **   
The Amazon Resource Name (ARN) of the SNS topic to be used by the event notification subscription.  
Type: String  
Length Constraints: Maximum length of 2147483647.  
Required: No

 **SourceIds.SourceId.N**   
A list of one or more identifiers of Amazon Redshift source objects. All of the objects must be of the same type as was specified in the source type parameter. The event subscription will return only events generated by the specified objects. If not specified, then events are returned for all objects within the source type specified.  
Example: my-cluster-1, my-cluster-2  
Example: my-snapshot-20131010  
Type: Array of strings  
Length Constraints: Maximum length of 2147483647.  
Required: No

 ** SourceType **   
The type of source that will be generating the events. For example, if you want to be notified of events generated by a cluster, you would set this parameter to cluster. If this value is not specified, events are returned for all Amazon Redshift objects in your AWS account. You must specify a source type in order to specify source IDs.  
Valid values: cluster, cluster-parameter-group, cluster-security-group, cluster-snapshot, and scheduled-action.  
Type: String  
Length Constraints: Maximum length of 2147483647.  
Required: No

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

The following element is returned by the service.

 ** EventSubscription **   
Describes event subscriptions.  
Type: [EventSubscription](API_EventSubscription.md) object

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

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

 ** InvalidSubscriptionStateFault **   
The subscription request is invalid because it is a duplicate request. This subscription request is already in progress.  
HTTP Status Code: 400

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

 ** SNSNoAuthorization **   
You do not have permission to publish to the specified Amazon SNS topic.  
HTTP Status Code: 400

 ** SNSTopicArnNotFound **   
An Amazon SNS topic with the specified Amazon Resource Name (ARN) does not exist.  
HTTP Status Code: 404

 ** SourceNotFound **   
The specified Amazon Redshift event source could not be found.  
HTTP Status Code: 404

 ** SubscriptionCategoryNotFound **   
The value specified for the event category was not one of the allowed values, or it specified a category that does not apply to the specified source type. The allowed values are Configuration, Management, Monitoring, and Security.  
HTTP Status Code: 404

 ** SubscriptionEventIdNotFound **   
An Amazon Redshift event with the specified event ID does not exist.  
HTTP Status Code: 404

 ** SubscriptionNotFound **   
An Amazon Redshift event notification subscription with the specified name does not exist.  
HTTP Status Code: 404

 ** SubscriptionSeverityNotFound **   
The value specified for the event severity was not one of the allowed values, or it specified a severity that does not apply to the specified source type. The allowed values are ERROR and INFO.  
HTTP Status Code: 404

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

### Example
<a name="API_ModifyEventSubscription_Example_1"></a>

This example disables an event notification subscription.

#### Sample Request
<a name="API_ModifyEventSubscription_Example_1_Request"></a>

```
https://redshift.us-east-2.amazonaws.com/
       ?Action=ModifyEventSubscription
&SubscriptionName=mysubscription
&Enabled=false
&SignatureMethod=HmacSHA256&SignatureVersion=4
&Version=2012-12-01
&X-Amz-Algorithm=AWS4-HMAC-SHA256
&X-Amz-Credential=AKIAIOSFODNN7EXAMPLE/20190817/us-east-2/redshift/aws4_request
&X-Amz-Date=20190825T160000Z
&X-Amz-SignedHeaders=content-type;host;user-agent;x-amz-content-sha256;x-amz-date
&X-Amz-Signature=0aa1234bb5cc678ddddd901ee2ff3aa45678b90c12d345e6ff789012345a6b7b
```

#### Sample Response
<a name="API_ModifyEventSubscription_Example_1_Response"></a>

```
<ModifyEventSubscriptionResponse xmlns="http://redshift.amazonaws.com/doc/2012-12-01/">
  <ModifyEventSubscriptionResult>
    <EventSubscription>
      <Severity>ERROR</Severity>
      <CustSubscriptionId>mysubscription</CustSubscriptionId>
      <SnsTopicArn>arn:aws:sns:us-east-2:123456789012:MySNStopic</SnsTopicArn>
      <SourceIdsList/>
      <EventCategoriesList/>
      <SubscriptionCreationTime>2019-12-27T00:27:43.748Z</SubscriptionCreationTime>
      <Enabled>false</Enabled>
      <Tags/>
      <Status>active</Status>
      <CustomerAwsId>123456789012</CustomerAwsId>
    </EventSubscription>
  </ModifyEventSubscriptionResult>
  <ResponseMetadata>
    <RequestId>ab342788-28f2-11ea-a940-1b28a85fd753</RequestId>
  </ResponseMetadata>
</ModifyEventSubscriptionResponse>
```

## See Also
<a name="API_ModifyEventSubscription_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/redshift-2012-12-01/ModifyEventSubscription) 
+  [AWS SDK for .NET V4](https://docs.aws.amazon.com/goto/DotNetSDKV4/redshift-2012-12-01/ModifyEventSubscription) 
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/redshift-2012-12-01/ModifyEventSubscription) 
+  [AWS SDK for Go v2](https://docs.aws.amazon.com/goto/SdkForGoV2/redshift-2012-12-01/ModifyEventSubscription) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/redshift-2012-12-01/ModifyEventSubscription) 
+  [AWS SDK for JavaScript V3](https://docs.aws.amazon.com/goto/SdkForJavaScriptV3/redshift-2012-12-01/ModifyEventSubscription) 
+  [AWS SDK for Kotlin](https://docs.aws.amazon.com/goto/SdkForKotlin/redshift-2012-12-01/ModifyEventSubscription) 
+  [AWS SDK for PHP V3](https://docs.aws.amazon.com/goto/SdkForPHPV3/redshift-2012-12-01/ModifyEventSubscription) 
+  [AWS SDK for Python](https://docs.aws.amazon.com/goto/boto3/redshift-2012-12-01/ModifyEventSubscription) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/redshift-2012-12-01/ModifyEventSubscription)