# OrganizationalUnitEntry
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**Important**  
This is not available during the preview release.

An organizational unit or root entry in the organizational monitoring boundary, with its associated regions.

## Contents
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 ** organizationalUnitId **   <a name="wellarchitected-Type-OrganizationalUnitEntry-organizationalUnitId"></a>
The AWS Organizations organizational unit ID or root ID. Must match the pattern `r-[a-z0-9]{4,32}` for roots or `ou-[a-z0-9]{4,32}-[a-z0-9]{8,32}` for OUs.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 68.  
Pattern: `(r-[a-z0-9]{4,32}|ou-[a-z0-9]{4,32}-[a-z0-9]{8,32})`   
Required: Yes

 ** regions **   <a name="wellarchitected-Type-OrganizationalUnitEntry-regions"></a>
The list of regions to monitor for this organizational unit or root.  
Type: Array of strings  
Array Members: Minimum number of 0 items. Maximum number of 25 items.  
Length Constraints: Minimum length of 0. Maximum length of 64.  
Pattern: `[a-z]{2}-[a-z]+-\d{1}`   
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/OrganizationalUnitEntry) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/wellarchitected-2020-03-31/OrganizationalUnitEntry) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/wellarchitected-2020-03-31/OrganizationalUnitEntry)