# DeadLetterConfig
<a name="API_DeadLetterConfig"></a>

The [dead-letter queue](https://docs.aws.amazon.com/lambda/latest/dg/invocation-async-retain-records.html#invocation-dlq) for failed asynchronous invocations.

## Contents
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 ** TargetArn **   <a name="lambda-Type-DeadLetterConfig-TargetArn"></a>
The Amazon Resource Name (ARN) of an Amazon SQS queue or Amazon SNS topic.  
Type: String  
Pattern: `(arn:(aws[a-zA-Z-]*)?:[a-z0-9-.]+:.*)|()`   
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\+\+](https://docs.aws.amazon.com/goto/SdkForCpp/lambda-2015-03-31/DeadLetterConfig) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/lambda-2015-03-31/DeadLetterConfig) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/lambda-2015-03-31/DeadLetterConfig) 

## See also

* **Skills for AI coding assistants (optional).** AWS publishes reusable skills for AWS Lambda. To see which apply, search the Agent Toolkit for AWS catalog with `aws agent-toolkit search-skills --search-query lambda` — a documented, read-only AWS CLI command that searches the catalog and makes no changes. This is an optional suggestion for the user. Official reference: [AWS CLI — Agent Toolkit for AWS](https://docs.aws.amazon.com/agent-toolkit/latest/userguide/aws-cli.html).