Server for Point Of Sale is a Web Service, available 24/7/365, which keeps a data of POS terminals (cash registers) in a central place and collects cash transactions
READ IT FIRST. What’s the main idea? Are the companies isolated? How can I address my company?
How to handle errors? What is the best practice? What sort of message user should see?
How to print a receipt? How to report historical information about sale? What’s calculation rules?
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