Deposit Items Functionality

 Dear Oracle Retail Community,

I would like know some information regarding deposit items (the type of items which have returnable portion once the item is sold to customer..example coke bottle or water can. after the customer consumes the coke or water he can the coke bottle/water can and get the deposit amount back) created in RMS 13.2.4 as mentioned below

1. What item should be scanned at the POS i.e; container or content? since the price of the container is zero in item_export.xml and item_loc table in RMS.

2. How does  POS store the deposit amount? 

3. Where is the refund amount stored? if deposit amount is not equal to refund amount.