# UpdateRole
<a name="API_UpdateRole"></a>

Updates the description or maximum session duration setting of a role.

## Request Parameters
<a name="API_UpdateRole_RequestParameters"></a>

 For information about the parameters that are common to all actions, see [Common Parameters](CommonParameters.md).

 ** Description **   
The new description that you want to apply to the specified role.  
Type: String  
Length Constraints: Maximum length of 1000.  
Pattern: `[\u0009\u000A\u000D\u0020-\u007E\u00A1-\u00FF]*`   
Required: No

 ** MaxSessionDuration **   
The maximum session duration (in seconds) that you want to set for the specified role. If you do not specify a value for this setting, the default value of one hour is applied. This setting can have a value from 1 hour to 12 hours.  
Anyone who assumes the role from the AWS CLI or API can use the `DurationSeconds` API parameter or the `duration-seconds` AWS CLI parameter to request a longer session. The `MaxSessionDuration` setting determines the maximum duration that can be requested using the `DurationSeconds` parameter. If users don't specify a value for the `DurationSeconds` parameter, their security credentials are valid for one hour by default. This applies when you use the `AssumeRole*` API operations or the `assume-role*` AWS CLI operations but does not apply when you use those operations to create a console URL. For more information, see [Using IAM roles](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_use.html) in the *IAM User Guide*.  
IAM role credentials provided by Amazon EC2 instances assigned to the role are not subject to the specified maximum session duration.
Type: Integer  
Valid Range: Minimum value of 3600. Maximum value of 43200.  
Required: No

 ** RoleName **   
The name of the role that you want to modify.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 64.  
Pattern: `[\w+=,.@-]+`   
Required: Yes

## Errors
<a name="API_UpdateRole_Errors"></a>

For information about the errors that are common to all actions, see [Common Error Types](CommonErrors.md).

 ** NoSuchEntity **   
The request was rejected because it referenced a resource entity that does not exist. The error message describes the resource.  
HTTP Status Code: 404

 ** ServiceFailure **   
The request processing has failed because of an unknown error, exception or failure.  
HTTP Status Code: 500

 ** UnmodifiableEntity **   
The request was rejected because service-linked roles are protected AWS resources. Only the service that depends on the service-linked role can modify or delete the role on your behalf. The error message includes the name of the service that depends on this service-linked role. You must request the change through that service.  
HTTP Status Code: 400

## See Also
<a name="API_UpdateRole_SeeAlso"></a>

For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS Command Line Interface V2](https://docs.aws.amazon.com/goto/cli2/iam-2010-05-08/UpdateRole) 
+  [AWS SDK for .NET V4](https://docs.aws.amazon.com/goto/DotNetSDKV4/iam-2010-05-08/UpdateRole) 
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/iam-2010-05-08/UpdateRole) 
+  [AWS SDK for Go v2](https://docs.aws.amazon.com/goto/SdkForGoV2/iam-2010-05-08/UpdateRole) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/iam-2010-05-08/UpdateRole) 
+  [AWS SDK for JavaScript V3](https://docs.aws.amazon.com/goto/SdkForJavaScriptV3/iam-2010-05-08/UpdateRole) 
+  [AWS SDK for Kotlin](https://docs.aws.amazon.com/goto/SdkForKotlin/iam-2010-05-08/UpdateRole) 
+  [AWS SDK for PHP V3](https://docs.aws.amazon.com/goto/SdkForPHPV3/iam-2010-05-08/UpdateRole) 
+  [AWS SDK for Python](https://docs.aws.amazon.com/goto/boto3/iam-2010-05-08/UpdateRole) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/iam-2010-05-08/UpdateRole)