# MappingRule
<a name="API_MappingRule"></a>

A single mapping entry for each supported specifier or sub-field.

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

 ** specifier **   <a name="rolesanywhere-Type-MappingRule-specifier"></a>
Specifier within a certificate field, such as CN, OU, or UID from the Subject field.  
Type: String  
Length Constraints: Minimum length of 0. Maximum length of 60.  
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\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/rolesanywhere-2018-05-10/MappingRule) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/rolesanywhere-2018-05-10/MappingRule) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/rolesanywhere-2018-05-10/MappingRule)