Ability to Work with an Order During the DoCheque Operation in ICashRegister

In the API V9Preview1, the ability to work with an order during the DoCheque operation has been introduced, using IOperationService.

To change any order data, for example, to add external data using AddOrderExternalData, it is necessary to use IOperationService, which is an input argument of DoCheque.

Since the order is already in the status Bill during the execution of DoCheque, most operations are unavailable.