ReservedInstancesId => Str

The IDs of the purchased Reserved Instances. If your purchase crosses into a discounted pricing tier, the final Reserved Instances IDs might change. For more information, see Crossing pricing tiers (https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/concepts-reserved-instances-application.html#crossing-pricing-tiers) in the Amazon Elastic Compute Cloud User Guide.

_request_id => Str