# AddRoleToDBCluster
<a name="API_AddRoleToDBCluster"></a>

Associates an Identity and Access Management (IAM) role with an Neptune DB cluster.

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

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

 ** DBClusterIdentifier **   
The name of the DB cluster to associate the IAM role with.  
Type: String  
Required: Yes

 ** FeatureName **   
The name of the feature for the Neptune DB cluster that the IAM role is to be associated with. For the list of supported feature names, see [DBEngineVersion](API_DBEngineVersion.md).  
Type: String  
Required: No

 ** RoleArn **   
The Amazon Resource Name (ARN) of the IAM role to associate with the Neptune DB cluster, for example `arn:aws:iam::123456789012:role/NeptuneAccessRole`.  
Type: String  
Required: Yes

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

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

 ** DBClusterNotFoundFault **   
 *DBClusterIdentifier* does not refer to an existing DB cluster.  
HTTP Status Code: 404

 ** DBClusterRoleAlreadyExists **   
The specified IAM role Amazon Resource Name (ARN) is already associated with the specified DB cluster.  
HTTP Status Code: 400

 ** DBClusterRoleQuotaExceeded **   
You have exceeded the maximum number of IAM roles that can be associated with the specified DB cluster.  
HTTP Status Code: 400

 ** InvalidDBClusterStateFault **   
The DB cluster is not in a valid state.  
HTTP Status Code: 400

## See Also
<a name="API_AddRoleToDBCluster_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/neptune-2014-10-31/AddRoleToDBCluster) 
+  [AWS SDK for .NET V4](https://docs.aws.amazon.com/goto/DotNetSDKV4/neptune-2014-10-31/AddRoleToDBCluster) 
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/neptune-2014-10-31/AddRoleToDBCluster) 
+  [AWS SDK for Go v2](https://docs.aws.amazon.com/goto/SdkForGoV2/neptune-2014-10-31/AddRoleToDBCluster) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/neptune-2014-10-31/AddRoleToDBCluster) 
+  [AWS SDK for JavaScript V3](https://docs.aws.amazon.com/goto/SdkForJavaScriptV3/neptune-2014-10-31/AddRoleToDBCluster) 
+  [AWS SDK for Kotlin](https://docs.aws.amazon.com/goto/SdkForKotlin/neptune-2014-10-31/AddRoleToDBCluster) 
+  [AWS SDK for PHP V3](https://docs.aws.amazon.com/goto/SdkForPHPV3/neptune-2014-10-31/AddRoleToDBCluster) 
+  [AWS SDK for Python](https://docs.aws.amazon.com/goto/boto3/neptune-2014-10-31/AddRoleToDBCluster) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/neptune-2014-10-31/AddRoleToDBCluster)