# DeleteProjectPolicy


**Note**  
This operation applies only to Amazon Rekognition Custom Labels.

Deletes an existing project policy.

To get a list of project policies attached to a project, call [ListProjectPolicies](API_ListProjectPolicies.md). To attach a project policy to a project, call [PutProjectPolicy](API_PutProjectPolicy.md).

This operation requires permissions to perform the `rekognition:DeleteProjectPolicy` action.

## Request Syntax


```
{
   "PolicyName": "string",
   "PolicyRevisionId": "string",
   "ProjectArn": "string"
}
```

## Request Parameters


For information about the parameters that are common to all actions, see [Common Parameters](CommonParameters.md).

The request accepts the following data in JSON format.

 ** [PolicyName](#API_DeleteProjectPolicy_RequestSyntax) **   <a name="rekognition-DeleteProjectPolicy-request-PolicyName"></a>
The name of the policy that you want to delete.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 128.  
Pattern: `[a-zA-Z0-9_.\-]+`   
Required: Yes

 ** [PolicyRevisionId](#API_DeleteProjectPolicy_RequestSyntax) **   <a name="rekognition-DeleteProjectPolicy-request-PolicyRevisionId"></a>
The ID of the project policy revision that you want to delete.  
Type: String  
Length Constraints: Maximum length of 64.  
Pattern: `[0-9A-Fa-f]+`   
Required: No

 ** [ProjectArn](#API_DeleteProjectPolicy_RequestSyntax) **   <a name="rekognition-DeleteProjectPolicy-request-ProjectArn"></a>
The Amazon Resource Name (ARN) of the project that the project policy you want to delete is attached to.  
Type: String  
Length Constraints: Minimum length of 20. Maximum length of 2048.  
Pattern: `(^arn:[a-z\d-]+:rekognition:[a-z\d-]+:\d{12}:project\/[a-zA-Z0-9_.\-]{1,255}\/[0-9]+$)`   
Required: Yes

## Response Elements


If the action is successful, the service sends back an HTTP 200 response with an empty HTTP body.

## Errors


For information about the errors that are common to all actions, see [Common Error Types](CommonErrors.md).

 ** AccessDeniedException **   
You are not authorized to perform the action.  
HTTP Status Code: 400

 ** InternalServerError **   
Amazon Rekognition experienced a service issue. Try your call again.  
HTTP Status Code: 500

 ** InvalidParameterException **   
Input parameter violated a constraint. Validate your parameter before calling the API operation again.  
HTTP Status Code: 400

 ** InvalidPolicyRevisionIdException **   
The supplied revision id for the project policy is invalid.  
HTTP Status Code: 400

 ** ProvisionedThroughputExceededException **   
The number of requests exceeded your throughput limit. If you want to increase this limit, contact Amazon Rekognition.  
HTTP Status Code: 400

 ** ResourceNotFoundException **   
The resource specified in the request cannot be found.  
HTTP Status Code: 400

 ** ThrottlingException **   
Amazon Rekognition is temporarily unable to process the request. Try your call again.  
HTTP Status Code: 500

## See Also


For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS Command Line Interface V2](https://docs.aws.amazon.com/goto/cli2/rekognition-2016-06-27/DeleteProjectPolicy) 
+  [AWS SDK for .NET V4](https://docs.aws.amazon.com/goto/DotNetSDKV4/rekognition-2016-06-27/DeleteProjectPolicy) 
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/rekognition-2016-06-27/DeleteProjectPolicy) 
+  [AWS SDK for Go v2](https://docs.aws.amazon.com/goto/SdkForGoV2/rekognition-2016-06-27/DeleteProjectPolicy) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/rekognition-2016-06-27/DeleteProjectPolicy) 
+  [AWS SDK for JavaScript V3](https://docs.aws.amazon.com/goto/SdkForJavaScriptV3/rekognition-2016-06-27/DeleteProjectPolicy) 
+  [AWS SDK for Kotlin](https://docs.aws.amazon.com/goto/SdkForKotlin/rekognition-2016-06-27/DeleteProjectPolicy) 
+  [AWS SDK for PHP V3](https://docs.aws.amazon.com/goto/SdkForPHPV3/rekognition-2016-06-27/DeleteProjectPolicy) 
+  [AWS SDK for Python](https://docs.aws.amazon.com/goto/boto3/rekognition-2016-06-27/DeleteProjectPolicy) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/rekognition-2016-06-27/DeleteProjectPolicy)