# SsmExternalParameter
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AWS Systems Manager Document external parameter.

## Contents
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**Important**  
This data type is a UNION, so only one of the following members can be specified when used or returned.

 ** dynamicPath **   <a name="mgn-Type-SsmExternalParameter-dynamicPath"></a>
AWS Systems Manager Document external parameters dynamic path.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 1011.  
Pattern: `[a-zA-Z0-9_]+(\.[a-zA-Z0-9_\[\]]+)*`   
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/mgn-2020-02-26/SsmExternalParameter) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/mgn-2020-02-26/SsmExternalParameter) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/mgn-2020-02-26/SsmExternalParameter)