# SourceEventMetadata
<a name="API_SourceEventMetadata"></a>

Describes the metadata for a source event.

For more information, see [Event structure reference](https://docs.aws.amazon.com/eventbridge/latest/userguide/eb-events-structure.html) in the *Amazon EventBridge User Guide*.

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

 ** eventOccurrenceTime **   <a name="Notifications-Type-SourceEventMetadata-eventOccurrenceTime"></a>
The date and time the source event occurred. This is based on the Source Event.  
Type: Timestamp  
Required: Yes

 ** eventType **   <a name="Notifications-Type-SourceEventMetadata-eventType"></a>
The type of event. For example, an Amazon CloudWatch state change.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 256.  
Required: Yes

 ** eventTypeVersion **   <a name="Notifications-Type-SourceEventMetadata-eventTypeVersion"></a>
The version of the type of event.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 3.  
Pattern: `[0-9.]+`   
Required: Yes

 ** relatedAccount **   <a name="Notifications-Type-SourceEventMetadata-relatedAccount"></a>
The primary AWS account of `SourceEvent`.  
Type: String  
Pattern: `[0-9]{12}`   
Required: Yes

 ** relatedResources **   <a name="Notifications-Type-SourceEventMetadata-relatedResources"></a>
A list of resources related to this `NotificationEvent`.  
Type: Array of [Resource](API_Resource.md) objects  
Required: Yes

 ** source **   <a name="Notifications-Type-SourceEventMetadata-source"></a>
The AWS service the event originates from. For example `aws.cloudwatch`.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 36.  
Pattern: `aws.([a-z0-9\-])+`   
Required: Yes

 ** sourceEventId **   <a name="Notifications-Type-SourceEventMetadata-sourceEventId"></a>
The source event id.  
Type: String  
Required: Yes

 ** eventOriginRegion **   <a name="Notifications-Type-SourceEventMetadata-eventOriginRegion"></a>
The Region the event originated from.  
Type: String  
Length Constraints: Minimum length of 0. Maximum length of 32.  
Pattern: `([a-z]{1,4})-([a-z]{1,15}-)+([0-9])`   
Required: No

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

For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/notifications-2018-05-10/SourceEventMetadata) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/notifications-2018-05-10/SourceEventMetadata) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/notifications-2018-05-10/SourceEventMetadata)