# TemplateSource
<a name="API_TemplateSource"></a>

The migration workflow template used as the source for the new template.

## 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.

 ** workflowId **   <a name="migrationhuborchestrator-Type-TemplateSource-workflowId"></a>
The ID of the workflow from the source migration workflow template.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 100.  
Pattern: `[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/migrationhuborchestrator-2021-08-28/TemplateSource) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/migrationhuborchestrator-2021-08-28/TemplateSource) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/migrationhuborchestrator-2021-08-28/TemplateSource)