# (Optional) Configure record transformation and format conversion


Configure Amazon Data Firehose to transform and convert your record data.

## If you choose Amazon MSK as the source for your Firehose stream.


**In the **Transform source records with AWS Lambda** section, provide values for the following field.**

1.   
**Data transformation**  
To create a Firehose stream that doesn't transform incoming data, do not check the **Enable data transformation** checkbox.   
To specify a Lambda function for Firehose to invoke and use to transform incoming data before delivering it, check the **Enable data transformation** checkbox. You can configure a new Lambda function using one of the Lambda blueprints or choose an existing Lambda function. Your Lambda function must contain the status model that is required by Firehose. For more information, see [Transform source data in Amazon Data Firehose](data-transformation.md).

1. In the **Convert record format** section, provide values for the following field:  
**Record format conversion**  
To create a Firehose stream that doesn't convert the format of the incoming data records, choose **Disabled**.   
To convert the format of the incoming records, choose **Enabled**, then specify the output format you want. You need to specify an AWS Glue table that holds the schema that you want Firehose to use to convert your record format. For more information, see [Convert input data format in Amazon Data Firehose](record-format-conversion.md).  
For an example of how to set up record format conversion with CloudFormation, see [AWS::KinesisFirehose::DeliveryStream](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-kinesisfirehose-deliverystream.html#aws-resource-kinesisfirehose-deliverystream--examples).

## If you choose Amazon Kinesis Data Streams or Direct PUT as the source for your Firehose stream


 

**In the **Source settings** section, provide the following fields.**

1. Under **Transform records**, choose one of the following:

   1. If your destination is Amazon S3 or Splunk, in the **Decompress source records Amazon CloudWatch Logs** section, choose **Turn on decompression**.

   1. In the **Transform source records with AWS Lambda** section, provide values for the following field:  
**Data transformation**  
To create a Firehose stream that doesn't transform incoming data, do not check the **Enable data transformation** checkbox.   
To specify a Lambda function for Amazon Data Firehose to invoke and use to transform incoming data before delivering it, check the **Enable data transformation** checkbox. You can configure a new Lambda function using one of the Lambda blueprints or choose an existing Lambda function. Your Lambda function must contain the status model that is required by Amazon Data Firehose. For more information, see [Transform source data in Amazon Data Firehose](data-transformation.md).

1. In the **Convert record format** section, provide values for the following field:  
**Record format conversion**  
To create a Firehose stream that doesn't convert the format of the incoming data records, choose **Disabled**.   
To convert the format of the incoming records, choose **Enabled**, then specify the output format you want. You need to specify an AWS Glue table that holds the schema that you want Amazon Data Firehose to use to convert your record format. For more information, see [Convert input data format in Amazon Data Firehose](record-format-conversion.md).  
For an example of how to set up record format conversion with CloudFormation, see [AWS::KinesisFirehose::DeliveryStream](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-kinesisfirehose-deliverystream.html#aws-resource-kinesisfirehose-deliverystream--examples).