# Impact
<a name="API_Impact"></a>

The dollar value of the anomaly. 

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

 ** MaxImpact **   <a name="awscostmanagement-Type-Impact-MaxImpact"></a>
The maximum dollar value that's observed for an anomaly.  
Type: Double  
Required: Yes

 ** TotalActualSpend **   <a name="awscostmanagement-Type-Impact-TotalActualSpend"></a>
The cumulative dollar amount that was actually spent during the anomaly.  
Type: Double  
Valid Range: Minimum value of 0.0.  
Required: No

 ** TotalExpectedSpend **   <a name="awscostmanagement-Type-Impact-TotalExpectedSpend"></a>
The cumulative dollar amount that was expected to be spent during the anomaly. It is calculated using advanced machine learning models to determine the typical spending pattern based on historical data for a customer.  
Type: Double  
Valid Range: Minimum value of 0.0.  
Required: No

 ** TotalImpact **   <a name="awscostmanagement-Type-Impact-TotalImpact"></a>
The cumulative dollar difference between the total actual spend and total expected spend. It is calculated as `TotalActualSpend - TotalExpectedSpend`.  
Type: Double  
Required: No

 ** TotalImpactPercentage **   <a name="awscostmanagement-Type-Impact-TotalImpactPercentage"></a>
The cumulative percentage difference between the total actual spend and total expected spend. It is calculated as `(TotalImpact / TotalExpectedSpend) * 100`. When `TotalExpectedSpend` is zero, this field is omitted. Expected spend can be zero in situations such as when you start to use a service for the first time.  
Type: Double  
Valid Range: Minimum value of 0.0.  
Required: No

## See Also
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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/ce-2017-10-25/Impact) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/ce-2017-10-25/Impact) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/ce-2017-10-25/Impact)