# ResourceTag
<a name="API_ResourceTag"></a>

The tag structure that contains a tag key and value. 

**Note**  
Tagging is supported only for the following Cost Explorer resource types: [https://docs.aws.amazon.com/aws-cost-management/latest/APIReference/API_AnomalyMonitor.html](https://docs.aws.amazon.com/aws-cost-management/latest/APIReference/API_AnomalyMonitor.html), [https://docs.aws.amazon.com/aws-cost-management/latest/APIReference/API_AnomalySubscription.html](https://docs.aws.amazon.com/aws-cost-management/latest/APIReference/API_AnomalySubscription.html), [https://docs.aws.amazon.com/aws-cost-management/latest/APIReference/API_CostCategory.html](https://docs.aws.amazon.com/aws-cost-management/latest/APIReference/API_CostCategory.html).

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

 ** Key **   <a name="awscostmanagement-Type-ResourceTag-Key"></a>
The key that's associated with the tag.   
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 128.  
Pattern: `^([\p{L}\p{Z}\p{N}_.:/=+\-@]*)$`   
Required: Yes

 ** Value **   <a name="awscostmanagement-Type-ResourceTag-Value"></a>
The value that's associated with the tag.   
Type: String  
Length Constraints: Minimum length of 0. Maximum length of 256.  
Pattern: `^([\p{L}\p{Z}\p{N}_.:/=+\-@]*)$`   
Required: Yes

## See Also
<a name="API_ResourceTag_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/ce-2017-10-25/ResourceTag) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/ce-2017-10-25/ResourceTag) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/ce-2017-10-25/ResourceTag)