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# AWS::Lambda::Function DeadLetterConfig
<a name="aws-properties-lambda-function-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.

## Syntax
<a name="aws-properties-lambda-function-deadletterconfig-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-lambda-function-deadletterconfig-syntax.json"></a>

```
{
  "[TargetArn](#cfn-lambda-function-deadletterconfig-targetarn)" : String
}
```

### YAML
<a name="aws-properties-lambda-function-deadletterconfig-syntax.yaml"></a>

```
  [TargetArn](#cfn-lambda-function-deadletterconfig-targetarn): String
```

## Properties
<a name="aws-properties-lambda-function-deadletterconfig-properties"></a>

`TargetArn`  <a name="cfn-lambda-function-deadletterconfig-targetarn"></a>
The Amazon Resource Name (ARN) of an Amazon SQS queue or Amazon SNS topic.  
*Required*: No  
*Type*: String  
*Pattern*: `^(arn:(aws[a-zA-Z-]*)?:[a-z0-9-.]+:.*)|()$`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

## Examples
<a name="aws-properties-lambda-function-deadletterconfig--examples"></a>

### Dead-letter Queue
<a name="aws-properties-lambda-function-deadletterconfig--examples--Dead-letter_Queue"></a>

Add a dead-letter queue to a function.

#### YAML
<a name="aws-properties-lambda-function-deadletterconfig--examples--Dead-letter_Queue--yaml"></a>

```
      DeadLetterConfig:
        TargetArn: arn:aws:sqs:us-east-2:123456789012:dlq
```