1. Search setting options: search for "commodity bills" or similar options in the menu or settings of the cash register. Usually, these settings are located in the management background or system settings of cashier software.

2. Enter the product review settings: enter the product review settings page or options.

3. Turn off the same note function: in the commodity note setting page, find the options related to the same note. Depending on the specific cash register system, a switch or check box can be provided to enable or disable this function. Just turn off the switch or check box.

4. Save Settings: Make sure that you have saved the changes to the product review settings so that the changes can take effect.