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# AWS::IoTTwinMaker::ComponentType LambdaFunction
<a name="aws-properties-iottwinmaker-componenttype-lambdafunction"></a>

The Lambda function.

## Syntax
<a name="aws-properties-iottwinmaker-componenttype-lambdafunction-syntax"></a>

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

### JSON
<a name="aws-properties-iottwinmaker-componenttype-lambdafunction-syntax.json"></a>

```
{
  "[Arn](#cfn-iottwinmaker-componenttype-lambdafunction-arn)" : String
}
```

### YAML
<a name="aws-properties-iottwinmaker-componenttype-lambdafunction-syntax.yaml"></a>

```
  [Arn](#cfn-iottwinmaker-componenttype-lambdafunction-arn): String
```

## Properties
<a name="aws-properties-iottwinmaker-componenttype-lambdafunction-properties"></a>

`Arn`  <a name="cfn-iottwinmaker-componenttype-lambdafunction-arn"></a>
The Lambda function ARN.  
*Required*: Yes  
*Type*: String  
*Pattern*: `arn:((aws)|(aws-cn)|(aws-us-gov)):lambda:[a-z0-9-]+:[0-9]{12}:function:[\/a-zA-Z0-9_-]+`  
*Minimum*: `1`  
*Maximum*: `128`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)