Changes to Create a Subscription Plan

added the optional property billing_items to the response with the 201 status

the request's body type changed from object to no type

removed the request property amount

removed the request property billing_defaults

removed the request property billing_interval

removed the request property currency

removed the request property default_total_billing_intervals

removed the request property description

removed the request property discount_phase_defaults

removed the request property linked_to

removed the request property linked_type

removed the request property nickname

removed the request property plan_name

removed the request property tags

removed the request property trial_defaults

added createSubscriptionPlan createSubscriptionPlanDefaultDuration createSubscriptionPlanDiscountPhase createSubscriptionPlanTrialPhase to the request body anyOf list

the response property discount_phase_defaults became nullable for the status 201

the response property trial_defaults became nullable for the status 201

added the optional property is_usage_based to the response with the 201 status

the response property nickname became nullable for the status 201

the request property nickname became nullable