# ValidationData
<a name="API_ValidationData"></a>

Contains the Amazon S3 bucket location of the validation data for a model training job. 

The validation data includes error information for individual JSON lines in the dataset. For more information, see [Debugging a Failed Model Training](https://docs.aws.amazon.com/rekognition/latest/customlabels-dg/tm-debugging.html). 

You get the `ValidationData` object for the training dataset ([TrainingDataResult](API_TrainingDataResult.md)) and the test dataset ([TestingDataResult](API_TestingDataResult.md)) by calling [DescribeProjectVersions](API_DescribeProjectVersions.md). 

The assets array contains a single [Asset](API_Asset.md) object. The [GroundTruthManifest](API_GroundTruthManifest.md) field of the Asset object contains the S3 bucket location of the validation data. 

## Contents
<a name="API_ValidationData_Contents"></a>

 ** Assets **   <a name="rekognition-Type-ValidationData-Assets"></a>
The assets that comprise the validation data.   
Type: Array of [Asset](API_Asset.md) objects  
Required: No

## See Also
<a name="API_ValidationData_SeeAlso"></a>

For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/rekognition-2016-06-27/ValidationData) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/rekognition-2016-06-27/ValidationData) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/rekognition-2016-06-27/ValidationData)