# ReservedInstancesModification


Describes a Reserved Instance modification.

## Contents


 ** clientToken **   
A unique, case-sensitive key supplied by the client to ensure that the request is idempotent. For more information, see [Ensuring Idempotency](https://docs.aws.amazon.com/AWSEC2/latest/APIReference/Run_Instance_Idempotency.html).  
Type: String  
Required: No

 ** createDate **   
The time when the modification request was created.  
Type: Timestamp  
Required: No

 ** effectiveDate **   
The time for the modification to become effective.  
Type: Timestamp  
Required: No

 ** ModificationResultSet.N **   
Contains target configurations along with their corresponding new Reserved Instance IDs.  
Type: Array of [ReservedInstancesModificationResult](API_ReservedInstancesModificationResult.md) objects  
Required: No

 ** reservedInstancesModificationId **   
A unique ID for the Reserved Instance modification.  
Type: String  
Required: No

 ** ReservedInstancesSet.N **   
The IDs of one or more Reserved Instances.  
Type: Array of [ReservedInstancesId](API_ReservedInstancesId.md) objects  
Required: No

 ** status **   
The status of the Reserved Instances modification request.  
Type: String  
Required: No

 ** statusMessage **   
The reason for the status.  
Type: String  
Required: No

 ** updateDate **   
The time when the modification request was last updated.  
Type: Timestamp  
Required: No

## See Also


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/ec2-2016-11-15/ReservedInstancesModification) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/ec2-2016-11-15/ReservedInstancesModification) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/ec2-2016-11-15/ReservedInstancesModification)