Reference to the order that is being cancelled - required when OrderID is omitted
Reference to the system from which the order originated - required when OrderID is omitted
ID of the order that is being cancelled - required when BackendID and BackendSystemID are omitted
Entity type: Order
Lines to cancel - or, if none are specified, all open lines of the order will be cancelled
Cancel a complete order or a subset of lines.
The order can be identified by an OrderID or by BackendID + BackendSystemID, the lines can be identified by an OrderLineID or by BackendID.
The result will tell you if it was successful.