# PreviewResult
<a name="API_automation_PreviewResult"></a>

Contains the results of previewing an automation rule against available recommendations.

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

 ** accountId **   <a name="computeoptimizer-Type-automation_PreviewResult-accountId"></a>
The AWS account ID associated with the resource.  
Type: String  
Pattern: `[0-9]{12}`   
Required: No

 ** currentResourceDetails **   <a name="computeoptimizer-Type-automation_PreviewResult-currentResourceDetails"></a>
Detailed configuration information for a specific AWS resource, with type-specific details.  
Type: [ResourceDetails](API_automation_ResourceDetails.md) object  
 **Note: **This object is a Union. Only one member of this object can be specified or returned.  
Required: No

 ** currentResourceSummary **   <a name="computeoptimizer-Type-automation_PreviewResult-currentResourceSummary"></a>
A summary of the resource's current configuration.  
Type: String  
Required: No

 ** estimatedMonthlySavings **   <a name="computeoptimizer-Type-automation_PreviewResult-estimatedMonthlySavings"></a>
 Contains information about estimated monthly cost savings.   
Type: [EstimatedMonthlySavings](API_automation_EstimatedMonthlySavings.md) object  
Required: No

 ** lookBackPeriodInDays **   <a name="computeoptimizer-Type-automation_PreviewResult-lookBackPeriodInDays"></a>
The number of days of historical data used to analyze the resource.  
Type: Integer  
Required: No

 ** recommendedActionId **   <a name="computeoptimizer-Type-automation_PreviewResult-recommendedActionId"></a>
The ID of the recommended action being previewed.  
Type: String  
Pattern: `[0-9A-Za-z]{16}`   
Required: No

 ** recommendedActionType **   <a name="computeoptimizer-Type-automation_PreviewResult-recommendedActionType"></a>
The type of recommended action being previewed.  
Type: String  
Valid Values: `SnapshotAndDeleteUnattachedEbsVolume | UpgradeEbsVolumeType`   
Required: No

 ** recommendedResourceDetails **   <a name="computeoptimizer-Type-automation_PreviewResult-recommendedResourceDetails"></a>
Detailed configuration information for a specific AWS resource, with type-specific details.  
Type: [ResourceDetails](API_automation_ResourceDetails.md) object  
 **Note: **This object is a Union. Only one member of this object can be specified or returned.  
Required: No

 ** recommendedResourceSummary **   <a name="computeoptimizer-Type-automation_PreviewResult-recommendedResourceSummary"></a>
A summary of the resource's recommended configuration.  
Type: String  
Required: No

 ** region **   <a name="computeoptimizer-Type-automation_PreviewResult-region"></a>
The AWS Region where the resource is located.  
Type: String  
Required: No

 ** resourceArn **   <a name="computeoptimizer-Type-automation_PreviewResult-resourceArn"></a>
The Amazon Resource Name (ARN) of the resource affected by the recommended action.  
Type: String  
Pattern: `arn:aws[a-z0-9-]*:[a-z0-9-]+:[a-z0-9-]*:[0-9]{0,12}:[a-zA-Z0-9/_.-]+`   
Required: No

 ** resourceId **   <a name="computeoptimizer-Type-automation_PreviewResult-resourceId"></a>
The ID of the resource affected by the recommended action.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 100.  
Pattern: `[a-zA-Z0-9_.-]+`   
Required: No

 ** resourceTags **   <a name="computeoptimizer-Type-automation_PreviewResult-resourceTags"></a>
The tags associated with the resource.  
Type: Array of [Tag](API_automation_Tag.md) objects  
Array Members: Minimum number of 0 items. Maximum number of 200 items.  
Required: No

 ** resourceType **   <a name="computeoptimizer-Type-automation_PreviewResult-resourceType"></a>
The type of resource being evaluated.  
Type: String  
Valid Values: `EbsVolume`   
Required: No

 ** restartNeeded **   <a name="computeoptimizer-Type-automation_PreviewResult-restartNeeded"></a>
Indicates whether implementing the recommended action requires a resource restart.  
Type: Boolean  
Required: No

## See Also
<a name="API_automation_PreviewResult_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/compute-optimizer-automation-2025-09-22/PreviewResult) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/compute-optimizer-automation-2025-09-22/PreviewResult) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/compute-optimizer-automation-2025-09-22/PreviewResult)