# ReservedCapacityOptionsRequest
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Defines EC2 Fleet preferences for utilizing reserved capacity when DefaultTargetCapacityType is set to `reserved-capacity`.

**Note**  
This configuration can only be used if the EC2 Fleet is of type `instant`.

When you specify `ReservedCapacityOptions`, you must also set `DefaultTargetCapacityType` to `reserved-capacity` in the `TargetCapacitySpecification`.

For more information about Interruptible Capacity Reservations, see [Launch instances into an Interruptible Capacity Reservation](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-fleet-launch-instances-interruptible-cr-walkthrough.html) in the *Amazon EC2 User Guide*.

## Contents
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 ** ReservationType.N **   
The types of Capacity Reservations to use for fulfilling the EC2 Fleet request.  
Type: Array of strings  
Valid Values: `interruptible-capacity-reservation`   
Required: No

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