Is a constant connection of the cash register with CRK (Central Repository of Cash Registers) required? If the cash register communicates with CRK via Ethernet or WiFi, is it possible to use the same connection to communicate with the cash register from the computer (sales system)? What schedule of connections with CRK is set in the cash registers? Is it possible to program VAT rates "the old way" in cash registers after May 1? Can the advance payment be settled on a different cash desk than it was accepted?