post https://api.rainex.io/projects//subscriptions//one-time-charge
A one-time charge is a special subscription item that applies one time and saves the history of a one-time charge and is not saved in subscription items
Here are the enums that are contained in the answer:
| name | value |
|---|---|
| discounts[type] | FixedAmount, Percentage |
Error codes:
| NotFound | A subscription with such an Id cannot be found |
| ItemPricesNotFound | A Price for one-time charge not found |