# How to process a swap / return / trade-in item

KB84

Some promotions say that you can sell new items to customers, providing they give you their old ones.

Here’s how to process that in Accentis Enterprise:

1. Create a Sales order
2. Put on the new items you are selling
3. Put a negative quantity on the sales order for the items being returned
   1. You need to go to the Item code, and on the setup TAB, tick Allow this item to be over-dispatched
   2. Put a negative quantity and the trade-in price
4. Dispatch and invoice
   1. At the DISPATCH point, the old items will come IN to stock using the current average cost to put them in