Daily settlement is the settlement of electricity sales data for a day, usually performed before the end of work in the evening. Therefore, as long as the daily settlement operation is performed, the operator cannot perform electricity sales operations on the same day. However, if there are still users coming to purchase electricity after the daily settlement operation is completed, two methods can be used for the operation. One way is to change the date to the next day and then enter the system to sell electricity. Another approach is for each operator to register a backup login name, which can be used to continue selling electricity after the current login name is closed. However, it should be emphasized that using a backup login name for electricity sales operations also requires daily settlement operations. After entering the electricity sales on the next day, you need to change the date back to today's date.