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# AWS::Pipes::Pipe PipeTargetLambdaFunctionParameters
<a name="aws-properties-pipes-pipe-pipetargetlambdafunctionparameters"></a>

The parameters for using a Lambda function as a target.

## Syntax
<a name="aws-properties-pipes-pipe-pipetargetlambdafunctionparameters-syntax"></a>

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

### JSON
<a name="aws-properties-pipes-pipe-pipetargetlambdafunctionparameters-syntax.json"></a>

```
{
  "[InvocationType](#cfn-pipes-pipe-pipetargetlambdafunctionparameters-invocationtype)" : {{String}}
}
```

### YAML
<a name="aws-properties-pipes-pipe-pipetargetlambdafunctionparameters-syntax.yaml"></a>

```
  [InvocationType](#cfn-pipes-pipe-pipetargetlambdafunctionparameters-invocationtype): {{String}}
```

## Properties
<a name="aws-properties-pipes-pipe-pipetargetlambdafunctionparameters-properties"></a>

`InvocationType`  <a name="cfn-pipes-pipe-pipetargetlambdafunctionparameters-invocationtype"></a>
Specify whether to invoke the function synchronously or asynchronously.  
+ `REQUEST_RESPONSE` (default) - Invoke synchronously. This corresponds to the `RequestResponse` option in the `InvocationType` parameter for the Lambda [Invoke](https://docs.aws.amazon.com/lambda/latest/dg/API_Invoke.html#API_Invoke_RequestSyntax) API.
+ `FIRE_AND_FORGET` - Invoke asynchronously. This corresponds to the `Event` option in the `InvocationType` parameter for the Lambda [Invoke](https://docs.aws.amazon.com/lambda/latest/dg/API_Invoke.html#API_Invoke_RequestSyntax) API.
For more information, see [Invocation types](https://docs.aws.amazon.com/eventbridge/latest/userguide/eb-pipes.html#pipes-invocation) in the *Amazon EventBridge User Guide*.  
*Required*: No  
*Type*: String  
*Allowed values*: `REQUEST_RESPONSE | FIRE_AND_FORGET`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)