Error when trying to purchase reserved instance

Question

I get the following error when trying to purchase a reserved instance.
Error: Your current quota does not allow you to purchase the required number of reserved instances (Status Code: 400; Error Code: ReservedInstancesLimitExceeded; Request ID: 32762496-dfdf-447a-aff2-87cea127a11e)
This isn't a very helpful error report because I only have one other instance, and my reserved instance limit is at 20, and I currently have no reserved instances. So what do I do to fix this?

Answer

This is common when purchasing a large number of reserve instances. You need to request a quota increase ([documentation here](https://docs.aws.amazon.com/servicequotas/latest/userguide/request-quota-increase.html)).

Error when trying to purchase reserved instance

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