I purchased an Amazon Elastic Compute Cloud (Amazon EC2) Reserved Instance, but I want to modify the attributes of my Reserved Instance contract.
First, check the conditions that are listed at Requirements and restrictions for modification. If your Reserved Instance meets the conditions, then you can request to modify the following attributes:
If your modification request meets the guidelines and you’re ready to request a modification, then see Submitting modification requests.
If you purchased a Convertible Reserved Instance, then consider exchanging the Reserved Instance for another Convertible Reserved Instance. For more information, see Exchange Convertible Reserved Instances.
Amazon EC2 FAQs
How to purchase Amazon EC2 Reserved Instances
What are the differences between Standard and Convertible Reserved Instances?