# Root
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Contains details about a root. A root is a top-level parent node in the hierarchy of an organization that can contain organizational units (OUs) and accounts. The root contains every AWS account in the organization.

## Contents
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 ** Arn **   <a name="organizations-Type-Root-Arn"></a>
The Amazon Resource Name (ARN) of the root.  
For more information about ARNs in Organizations, see [ARN Formats Supported by Organizations](https://docs.aws.amazon.com/service-authorization/latest/reference/list_awsorganizations.html#awsorganizations-resources-for-iam-policies) in the * AWS Service Authorization Reference*.  
Type: String  
Pattern: `^arn:aws:organizations::\d{12}:root\/o-[a-z0-9]{10,32}\/r-[0-9a-z]{4,32}`   
Required: No

 ** Id **   <a name="organizations-Type-Root-Id"></a>
The unique identifier (ID) for the root. The ID is unique to the organization only.  
The [regex pattern](http://wikipedia.org/wiki/regex) for a root ID string requires "r-" followed by from 4 to 32 lowercase letters or digits.  
Type: String  
Length Constraints: Maximum length of 34.  
Pattern: `^r-[0-9a-z]{4,32}$`   
Required: No

 ** Name **   <a name="organizations-Type-Root-Name"></a>
The friendly name of the root.  
The [regex pattern](http://wikipedia.org/wiki/regex) that is used to validate this parameter is a string of any of the characters in the ASCII character range.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 128.  
Required: No

 ** PolicyTypes **   <a name="organizations-Type-Root-PolicyTypes"></a>
The types of policies that are currently enabled for the root and therefore can be attached to the root or to its OUs or accounts.  
Even if a policy type is shown as available in the organization, you can separately enable and disable them at the root level by using [EnablePolicyType](API_EnablePolicyType.md) and [DisablePolicyType](API_DisablePolicyType.md). Use [DescribeOrganization](API_DescribeOrganization.md) to see the availability of the policy types in that organization.
Type: Array of [PolicyTypeSummary](API_PolicyTypeSummary.md) objects  
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/organizations-2016-11-28/Root) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/organizations-2016-11-28/Root) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/organizations-2016-11-28/Root)