# StartLambdaFunctionFailedEventAttributes
<a name="API_StartLambdaFunctionFailedEventAttributes"></a>

Provides the details of the `StartLambdaFunctionFailed` event. It isn't set for other event types.

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

 ** cause **   <a name="SWF-Type-StartLambdaFunctionFailedEventAttributes-cause"></a>
The cause of the failure. To help diagnose issues, use this information to trace back the chain of events leading up to this event.  
If `cause` is set to `OPERATION_NOT_PERMITTED`, the decision failed because the IAM role attached to the execution lacked sufficient permissions. For details and example IAM policies, see [Lambda Tasks](https://docs.aws.amazon.com/amazonswf/latest/developerguide/lambda-task.html) in the *Amazon SWF Developer Guide*.
Type: String  
Valid Values: `ASSUME_ROLE_FAILED`   
Required: No

 ** message **   <a name="SWF-Type-StartLambdaFunctionFailedEventAttributes-message"></a>
A description that can help diagnose the cause of the fault.  
Type: String  
Length Constraints: Maximum length of 1728.  
Required: No

 ** scheduledEventId **   <a name="SWF-Type-StartLambdaFunctionFailedEventAttributes-scheduledEventId"></a>
The ID of the `ActivityTaskScheduled` event that was recorded when this activity task was scheduled. To help diagnose issues, use this information to trace back the chain of events leading up to this event.  
Type: Long  
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/StartLambdaFunctionFailedEventAttributes) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/swf-2012-01-25/StartLambdaFunctionFailedEventAttributes) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/swf-2012-01-25/StartLambdaFunctionFailedEventAttributes)