# LambdaInvokeOperation
<a name="API_control_LambdaInvokeOperation"></a>

Contains the configuration parameters for a `Lambda Invoke` operation.

## Contents
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 ** FunctionArn **   <a name="AmazonS3-Type-control_LambdaInvokeOperation-FunctionArn"></a>
The Amazon Resource Name (ARN) for the Amazon Lambda function that the specified job will invoke on every object in the manifest.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 1024.  
Pattern: `(arn:(aws[a-zA-Z-]*)?:lambda:)?([a-z]{2}((-gov)|(-iso([a-z]?)))?-[a-z]+-\d{1}:)?(\d{12}:)?(function:)?([a-zA-Z0-9-_]+)(:(\$LATEST|[a-zA-Z0-9-_]+))?`   
Required: No

 ** InvocationSchemaVersion **   <a name="AmazonS3-Type-control_LambdaInvokeOperation-InvocationSchemaVersion"></a>
Specifies the schema version for the payload that Batch Operations sends when invoking an Amazon Lambda function. Version `1.0` is the default. Version `2.0` is required when you use Batch Operations to invoke Amazon Lambda functions that act on directory buckets, or if you need to specify `UserArguments`. For more information, see [Automate object processing in Amazon S3 directory buckets with S3 Batch Operations and Amazon Lambda](https://aws.amazon.com/blogs/storage/automate-object-processing-in-amazon-s3-directory-buckets-with-s3-batch-operations-and-aws-lambda/) in the * Amazon Storage Blog*.  
Ensure that your Amazon Lambda function code expects `InvocationSchemaVersion` **2.0** and uses bucket name rather than bucket ARN. If the `InvocationSchemaVersion` does not match what your Amazon Lambda function expects, your function might not work as expected.
 **Directory buckets** - To initiate Amazon Lambda function to perform custom actions on objects in directory buckets, you must specify `2.0`.
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 64.  
Required: No

 ** UserArguments **   <a name="AmazonS3-Type-control_LambdaInvokeOperation-UserArguments"></a>
Key-value pairs that are passed in the payload that Batch Operations sends when invoking an Amazon Lambda function. You must specify `InvocationSchemaVersion` **2.0** for `LambdaInvoke` operations that include `UserArguments`. For more information, see [Automate object processing in Amazon S3 directory buckets with S3 Batch Operations and Amazon Lambda](https://aws.amazon.com/blogs/storage/automate-object-processing-in-amazon-s3-directory-buckets-with-s3-batch-operations-and-aws-lambda/) in the * Amazon Storage Blog*.  
Type: String to string map  
Map Entries: Maximum number of 10 items.  
Key Length Constraints: Minimum length of 1. Maximum length of 64.  
Value Length Constraints: Maximum length of 1024.  
Required: No

## See Also
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For more information about using this API in one of the language-specific Amazon SDKs, see the following:
+  [Amazon SDK for C\$1\$1](https://docs.amazonaws.cn/goto/SdkForCpp/s3control-2018-08-20/LambdaInvokeOperation) 
+  [Amazon SDK for Java V2](https://docs.amazonaws.cn/goto/SdkForJavaV2/s3control-2018-08-20/LambdaInvokeOperation) 
+  [Amazon SDK for Ruby V3](https://docs.amazonaws.cn/goto/SdkForRubyV3/s3control-2018-08-20/LambdaInvokeOperation)