# ListSavingsPlansPurchaseRecommendationGeneration


Retrieves a list of your historical recommendation generations within the past 30 days.

## Request Syntax


```
{
   "GenerationStatus": "string",
   "NextPageToken": "string",
   "PageSize": number,
   "RecommendationIds": [ "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.

 ** [GenerationStatus](#API_ListSavingsPlansPurchaseRecommendationGeneration_RequestSyntax) **   <a name="awscostmanagement-ListSavingsPlansPurchaseRecommendationGeneration-request-GenerationStatus"></a>
The status of the recommendation generation.  
Type: String  
Valid Values: `SUCCEEDED | PROCESSING | FAILED`   
Required: No

 ** [NextPageToken](#API_ListSavingsPlansPurchaseRecommendationGeneration_RequestSyntax) **   <a name="awscostmanagement-ListSavingsPlansPurchaseRecommendationGeneration-request-NextPageToken"></a>
The token to retrieve the next set of results.  
Type: String  
Length Constraints: Minimum length of 0. Maximum length of 8192.  
Pattern: `[\S\s]*`   
Required: No

 ** [PageSize](#API_ListSavingsPlansPurchaseRecommendationGeneration_RequestSyntax) **   <a name="awscostmanagement-ListSavingsPlansPurchaseRecommendationGeneration-request-PageSize"></a>
The number of recommendations that you want returned in a single response object.  
Type: Integer  
Valid Range: Minimum value of 0. Maximum value of 6000.  
Required: No

 ** [RecommendationIds](#API_ListSavingsPlansPurchaseRecommendationGeneration_RequestSyntax) **   <a name="awscostmanagement-ListSavingsPlansPurchaseRecommendationGeneration-request-RecommendationIds"></a>
The IDs for each specific recommendation.  
Type: Array of strings  
Length Constraints: Fixed length of 36.  
Pattern: `^[\S\s]{8}-[\S\s]{4}-[\S\s]{4}-[\S\s]{4}-[\S\s]{12}$`   
Required: No

## Response Syntax


```
{
   "GenerationSummaryList": [ 
      { 
         "EstimatedCompletionTime": "string",
         "GenerationCompletionTime": "string",
         "GenerationStartedTime": "string",
         "GenerationStatus": "string",
         "RecommendationId": "string"
      }
   ],
   "NextPageToken": "string"
}
```

## Response Elements


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

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

 ** [GenerationSummaryList](#API_ListSavingsPlansPurchaseRecommendationGeneration_ResponseSyntax) **   <a name="awscostmanagement-ListSavingsPlansPurchaseRecommendationGeneration-response-GenerationSummaryList"></a>
The list of historical recommendation generations.  
Type: Array of [GenerationSummary](API_GenerationSummary.md) objects

 ** [NextPageToken](#API_ListSavingsPlansPurchaseRecommendationGeneration_ResponseSyntax) **   <a name="awscostmanagement-ListSavingsPlansPurchaseRecommendationGeneration-response-NextPageToken"></a>
The token to retrieve the next set of results.  
Type: String  
Length Constraints: Minimum length of 0. Maximum length of 8192.  
Pattern: `[\S\s]*` 

## Errors


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

 ** InvalidNextTokenException **   
The pagination token is invalid. Try again without a pagination token.  
HTTP Status Code: 400

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

## 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/ce-2017-10-25/ListSavingsPlansPurchaseRecommendationGeneration) 
+  [AWS SDK for .NET V4](https://docs.aws.amazon.com/goto/DotNetSDKV4/ce-2017-10-25/ListSavingsPlansPurchaseRecommendationGeneration) 
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/ce-2017-10-25/ListSavingsPlansPurchaseRecommendationGeneration) 
+  [AWS SDK for Go v2](https://docs.aws.amazon.com/goto/SdkForGoV2/ce-2017-10-25/ListSavingsPlansPurchaseRecommendationGeneration) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/ce-2017-10-25/ListSavingsPlansPurchaseRecommendationGeneration) 
+  [AWS SDK for JavaScript V3](https://docs.aws.amazon.com/goto/SdkForJavaScriptV3/ce-2017-10-25/ListSavingsPlansPurchaseRecommendationGeneration) 
+  [AWS SDK for Kotlin](https://docs.aws.amazon.com/goto/SdkForKotlin/ce-2017-10-25/ListSavingsPlansPurchaseRecommendationGeneration) 
+  [AWS SDK for PHP V3](https://docs.aws.amazon.com/goto/SdkForPHPV3/ce-2017-10-25/ListSavingsPlansPurchaseRecommendationGeneration) 
+  [AWS SDK for Python](https://docs.aws.amazon.com/goto/boto3/ce-2017-10-25/ListSavingsPlansPurchaseRecommendationGeneration) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/ce-2017-10-25/ListSavingsPlansPurchaseRecommendationGeneration)