1, customer canceled: (after the waiter confirmed the menu to the customer, the cashier has downloaded the machine, and the dishes that the customer requested to cancel have not yet come out of the kitchen)

2. Guest changes dishes: (After the guest orders, the guest requests to change dishes before the kitchen produces them, and the name of the changed dishes and drinks is indicated on the return menu).

3. Clearance: (Temporary clearance caused by inadequate kitchen preparation during meals)

4. Dishes returned due to waiter's mistake: (Long-term hawking has been suspended, but it has been pointed out that the wrong station number and turntable combination have been written, and the menu has been returned because it has not been confirmed to the guests. )

5. Food quality problems: (material selection, processing technology, taste quality, color, temperature, container, fake goods, fake goods and foreign objects)

6, too slow: (more than one meal or delayed for 7 minutes (afternoon) 10 minutes (evening)

7. Transport error: (wrong station, omission, duplicate quantity, wrong variety)