Here are the steps to delete bill: 

1. Open Moka App.
   
   
2. Visit menu POINT-OF-SALES.
   
   
3. Click Billing List. 
   
   
4. Swipe the bill that you want to delete to the left, then click Delete. 
   
   
5. Select the reason to delete bill. 
   
   Notes: If you have other reasons than the available options, type the reason on the Other field. Click on the field and click Delete.