# WorkflowExecutionFailedEventAttributes
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Provides the details of the `WorkflowExecutionFailed` event.

## Contents
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 ** decisionTaskCompletedEventId **   <a name="SWF-Type-WorkflowExecutionFailedEventAttributes-decisionTaskCompletedEventId"></a>
The ID of the `DecisionTaskCompleted` event corresponding to the decision task that resulted in the `FailWorkflowExecution` decision to fail this execution. This information can be useful for diagnosing problems by tracing back the chain of events leading up to this event.  
Type: Long  
Required: Yes

 ** details **   <a name="SWF-Type-WorkflowExecutionFailedEventAttributes-details"></a>
The details of the failure.  
Type: String  
Length Constraints: Maximum length of 32768.  
Required: No

 ** reason **   <a name="SWF-Type-WorkflowExecutionFailedEventAttributes-reason"></a>
The descriptive reason provided for the failure.  
Type: String  
Length Constraints: Maximum length of 256.  
Required: No

## 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 SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/swf-2012-01-25/WorkflowExecutionFailedEventAttributes) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/swf-2012-01-25/WorkflowExecutionFailedEventAttributes) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/swf-2012-01-25/WorkflowExecutionFailedEventAttributes)