# ContextResourceTag
<a name="API_ContextResourceTag"></a>

A key-value pair representing a resource tag used to scope context content.

## Contents
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 ** key **   <a name="wellarchitected-Type-ContextResourceTag-key"></a>
The tag key.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 128.  
Pattern: `(?:(?!\$\{[a-zA-Z]+:)[\P{C}])+`   
Required: Yes

 ** value **   <a name="wellarchitected-Type-ContextResourceTag-value"></a>
The tag value.  
Type: String  
Length Constraints: Minimum length of 0. Maximum length of 256.  
Pattern: `(?:(?!\$\{[a-zA-Z]+:)[\P{C}])*`   
Required: Yes

## 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/wellarchitected-2020-03-31/ContextResourceTag) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/wellarchitected-2020-03-31/ContextResourceTag) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/wellarchitected-2020-03-31/ContextResourceTag)