# StartSavingsPlansPurchaseRecommendationGeneration
<a name="API_StartSavingsPlansPurchaseRecommendationGeneration"></a>

Requests a Savings Plans recommendation generation. This enables you to calculate a fresh set of Savings Plans recommendations that takes your latest usage data and current Savings Plans inventory into account. You can refresh Savings Plans recommendations up to three times daily for a consolidated billing family.

**Note**  
 `StartSavingsPlansPurchaseRecommendationGeneration` has no request syntax because no input parameters are needed to support this operation.

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

```
{
   "EstimatedCompletionTime": "string",
   "GenerationStartedTime": "string",
   "RecommendationId": "string"
}
```

## Response Elements
<a name="API_StartSavingsPlansPurchaseRecommendationGeneration_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.

 ** [EstimatedCompletionTime](#API_StartSavingsPlansPurchaseRecommendationGeneration_ResponseSyntax) **   <a name="awscostmanagement-StartSavingsPlansPurchaseRecommendationGeneration-response-EstimatedCompletionTime"></a>
The estimated time for when the recommendation generation will complete.  
Type: String  
Length Constraints: Minimum length of 20. Maximum length of 25.  
Pattern: `^\d{4}-\d\d-\d\dT\d\d:\d\d:\d\d(([+-]\d\d:\d\d)|Z)$` 

 ** [GenerationStartedTime](#API_StartSavingsPlansPurchaseRecommendationGeneration_ResponseSyntax) **   <a name="awscostmanagement-StartSavingsPlansPurchaseRecommendationGeneration-response-GenerationStartedTime"></a>
The start time of the recommendation generation.  
Type: String  
Length Constraints: Minimum length of 20. Maximum length of 25.  
Pattern: `^\d{4}-\d\d-\d\dT\d\d:\d\d:\d\d(([+-]\d\d:\d\d)|Z)$` 

 ** [RecommendationId](#API_StartSavingsPlansPurchaseRecommendationGeneration_ResponseSyntax) **   <a name="awscostmanagement-StartSavingsPlansPurchaseRecommendationGeneration-response-RecommendationId"></a>
The ID for this specific recommendation.  
Type: String  
Length Constraints: Fixed length of 36.  
Pattern: `^[\S\s]{8}-[\S\s]{4}-[\S\s]{4}-[\S\s]{4}-[\S\s]{12}$` 

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

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

 ** DataUnavailableException **   
The requested data is unavailable.  
HTTP Status Code: 400

 ** GenerationExistsException **   
A request to generate a recommendation or analysis is already in progress.  
HTTP Status Code: 400

 ** LimitExceededException **   
You made too many calls in a short period of time. Try again later.  
HTTP Status Code: 400

 ** ServiceQuotaExceededException **   
 You've reached the limit on the number of resources you can create, or exceeded the size of an individual resource.   
HTTP Status Code: 400

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

For more information about using this API in one of the language-specific Amazon SDKs, see the following:
+  [Amazon Command Line Interface V2](https://docs.amazonaws.cn/goto/cli2/ce-2017-10-25/StartSavingsPlansPurchaseRecommendationGeneration) 
+  [Amazon SDK for .NET V4](https://docs.amazonaws.cn/goto/DotNetSDKV4/ce-2017-10-25/StartSavingsPlansPurchaseRecommendationGeneration) 
+  [Amazon SDK for C\+\+](https://docs.amazonaws.cn/goto/SdkForCpp/ce-2017-10-25/StartSavingsPlansPurchaseRecommendationGeneration) 
+  [Amazon SDK for Go v2](https://docs.amazonaws.cn/goto/SdkForGoV2/ce-2017-10-25/StartSavingsPlansPurchaseRecommendationGeneration) 
+  [Amazon SDK for Java V2](https://docs.amazonaws.cn/goto/SdkForJavaV2/ce-2017-10-25/StartSavingsPlansPurchaseRecommendationGeneration) 
+  [Amazon SDK for JavaScript V3](https://docs.amazonaws.cn/goto/SdkForJavaScriptV3/ce-2017-10-25/StartSavingsPlansPurchaseRecommendationGeneration) 
+  [Amazon SDK for Kotlin](https://docs.amazonaws.cn/goto/SdkForKotlin/ce-2017-10-25/StartSavingsPlansPurchaseRecommendationGeneration) 
+  [Amazon SDK for PHP V3](https://docs.amazonaws.cn/goto/SdkForPHPV3/ce-2017-10-25/StartSavingsPlansPurchaseRecommendationGeneration) 
+  [Amazon SDK for Python](https://docs.amazonaws.cn/goto/boto3/ce-2017-10-25/StartSavingsPlansPurchaseRecommendationGeneration) 
+  [Amazon SDK for Ruby V3](https://docs.amazonaws.cn/goto/SdkForRubyV3/ce-2017-10-25/StartSavingsPlansPurchaseRecommendationGeneration)