To exchange an Item you will need to return the item to the stage of when it shows as a negative on the transaction screen
Now scan the item they wish to exchange it for.
* If the item is the same price as the returned item. The amount on the transcation screen will be 0.00. Press ok on the transaction screen and on the tenders Screen. Press Finalise.
* If the item is less value than the returned item, a negative difference will show on the transaction screen sub total. Select the choice of tender you wish to refund the customer. Press Finalise
* If the item is more value than the returned item, the customer will require to pay the difference. Select the choice of tender the customer has paid the difference with. Press Finalise