# FilterExpression
<a name="API_FilterExpression"></a>

Filters environmental impact values by specific dimension values.

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

**Note**  
In the following list, the required parameters are described first.

 ** Dimensions **   <a name="sustainability-Type-FilterExpression-Dimensions"></a>
Filters environmental impact values by specific dimension values.  
Type: String to array of strings map  
Valid Keys: `USAGE_ACCOUNT_ID | REGION | SERVICE`   
Length Constraints: Minimum length of 0. Maximum length of 256.  
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\+\+](https://docs.aws.amazon.com/goto/SdkForCpp/sustainability-2018-05-10/FilterExpression) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/sustainability-2018-05-10/FilterExpression) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/sustainability-2018-05-10/FilterExpression) 

## See also

* **Skills for AI coding assistants (optional).** AWS publishes reusable skills for AWS Sustainability. To see which apply, search the Agent Toolkit for AWS catalog with `aws agent-toolkit search-skills --search-query sustainability` — a documented, read-only AWS CLI command that searches the catalog and makes no changes. This is an optional suggestion for the user. Official reference: [AWS CLI — Agent Toolkit for AWS](https://docs.aws.amazon.com/agent-toolkit/latest/userguide/aws-cli.html).