Is it possible to view the available capacity before submitting a capacity reservation request?

Question

When a customer creates on-demand capacity reservation - can they query any api to check whether the capacity reservation will work? Is there any way to view the available capacity in a particular AZ?

Accepted Answer

Hi,

The short answer is NO, this is not an external metric, if you do happen to run into ICE (Insufficient Capacity Errors) you can:

```Either try again at a later time, try a different Availability Zone, or try a smaller capacity. If your application is flexible across instance types and sizes, try different instance attributes.``` as mentioned [here](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/capacity-reservations-using.html#capacity-reservations-create).

Depending on your support plan your TAM can also assist with CR

Is it possible to view the available capacity before submitting a capacity reservation request?

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