# UpdateEvaluation
<a name="API_UpdateEvaluation"></a>

Updates the `EvaluationName` of an `Evaluation`.

You can use the `GetEvaluation` operation to view the contents of the updated data element.

## Request Syntax
<a name="API_UpdateEvaluation_RequestSyntax"></a>

```
{
   "EvaluationId": "string",
   "EvaluationName": "string"
}
```

## Request Parameters
<a name="API_UpdateEvaluation_RequestParameters"></a>

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.

 ** [EvaluationId](#API_UpdateEvaluation_RequestSyntax) **   <a name="amazonml-UpdateEvaluation-request-EvaluationId"></a>
The ID assigned to the `Evaluation` during creation.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 64.  
Pattern: `[a-zA-Z0-9_.-]+`   
Required: Yes

 ** [EvaluationName](#API_UpdateEvaluation_RequestSyntax) **   <a name="amazonml-UpdateEvaluation-request-EvaluationName"></a>
A new user-supplied name or description of the `Evaluation` that will replace the current content.   
Type: String  
Length Constraints: Maximum length of 1024.  
Pattern: `.*\S.*|^$`   
Required: Yes

## Response Syntax
<a name="API_UpdateEvaluation_ResponseSyntax"></a>

```
{
   "EvaluationId": "string"
}
```

## Response Elements
<a name="API_UpdateEvaluation_ResponseElements"></a>

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

The following data is returned in JSON format by the service.

 ** [EvaluationId](#API_UpdateEvaluation_ResponseSyntax) **   <a name="amazonml-UpdateEvaluation-response-EvaluationId"></a>
The ID assigned to the `Evaluation` during creation. This value should be identical to the value of the `Evaluation` in the request.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 64.  
Pattern: `[a-zA-Z0-9_.-]+` 

## Errors
<a name="API_UpdateEvaluation_Errors"></a>

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

 ** InternalServerException **   
An error on the server occurred when trying to process a request.  
HTTP Status Code: 500

 ** InvalidInputException **   
An error on the client occurred. Typically, the cause is an invalid input value.  
HTTP Status Code: 400

 ** ResourceNotFoundException **   
A specified resource cannot be located.  
HTTP Status Code: 400

## Examples
<a name="API_UpdateEvaluation_Examples"></a>

### The following is a sample request and response of the UpdateEvaluation operation.
<a name="API_UpdateEvaluation_Example_1"></a>

This example illustrates one usage of UpdateEvaluation.

#### Sample Request
<a name="API_UpdateEvaluation_Example_1_Request"></a>

```
POST / HTTP/1.1
Host: machinelearning.<region>.<domain>
x-amz-Date: <Date>
Authorization: AWS4-HMAC-SHA256 Credential=<Credential>, SignedHeaders=contenttype;date;host;user-agent;x-amz-date;x-amz-target;x-amzn-requestid,Signature=<Signature>
User-Agent: <UserAgentString>
Content-Type: application/x-amz-json-1.1
Content-Length: <PayloadSizeBytes>
Connection: Keep-Alive
X-Amz-Target: AmazonML_20141212.UpdateEvaluation
{
  "EvaluationId": "ev-exampleEvaluationId",
  "EvaluationName": "ev-exampleEvaluationName"
}
```

#### Sample Response
<a name="API_UpdateEvaluation_Example_1_Response"></a>

```
HTTP/1.1 200 OK
x-amzn-RequestId: <RequestId>
Content-Type: application/x-amz-json-1.1
Content-Length: <PayloadSizeBytes>
Date: <Date>
{"EvaluationId": "ev-exampleEvaluationId"}
```

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

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/machinelearning-2014-12-12/UpdateEvaluation) 
+  [AWS SDK for .NET V4](https://docs.aws.amazon.com/goto/DotNetSDKV4/machinelearning-2014-12-12/UpdateEvaluation) 
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/machinelearning-2014-12-12/UpdateEvaluation) 
+  [AWS SDK for Go v2](https://docs.aws.amazon.com/goto/SdkForGoV2/machinelearning-2014-12-12/UpdateEvaluation) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/machinelearning-2014-12-12/UpdateEvaluation) 
+  [AWS SDK for JavaScript V3](https://docs.aws.amazon.com/goto/SdkForJavaScriptV3/machinelearning-2014-12-12/UpdateEvaluation) 
+  [AWS SDK for Kotlin](https://docs.aws.amazon.com/goto/SdkForKotlin/machinelearning-2014-12-12/UpdateEvaluation) 
+  [AWS SDK for PHP V3](https://docs.aws.amazon.com/goto/SdkForPHPV3/machinelearning-2014-12-12/UpdateEvaluation) 
+  [AWS SDK for Python](https://docs.aws.amazon.com/goto/boto3/machinelearning-2014-12-12/UpdateEvaluation) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/machinelearning-2014-12-12/UpdateEvaluation)