Please note that you'll need an extended agreement with Collector to use this functionality.
Here you'll find descriptions of the following requests:
Used to create a new reservation, or update an existing one.
Fetches information on a previously made reservation.
Cancels a previously approved reservation.
Please note that the StoreId parameter is mandatory to include in the request if you are selling to more than one country or having both consumers and companies as customers. This is used to distinguish between them.