# EventActor
<a name="API_EventActor"></a>

Identifies the actor that triggered an event.

## Contents
<a name="API_EventActor_Contents"></a>

 ** principalId **   <a name="ngresiliencehub-Type-EventActor-principalId"></a>
The principal ID of the actor.  
Type: String  
Required: Yes

 ** type **   <a name="ngresiliencehub-Type-EventActor-type"></a>
The type of actor, either USER or SYSTEM.  
Type: String  
Valid Values: `USER | SYSTEM`   
Required: Yes

 ** accountId **   <a name="ngresiliencehub-Type-EventActor-accountId"></a>
The AWS account ID of the actor.  
Type: String  
Required: No

 ** userName **   <a name="ngresiliencehub-Type-EventActor-userName"></a>
The user name of the actor.  
Type: String  
Required: No

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

For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\+\+](https://docs.aws.amazon.com/goto/SdkForCpp/resiliencehubv2-2026-02-17/EventActor) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/resiliencehubv2-2026-02-17/EventActor) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/resiliencehubv2-2026-02-17/EventActor)