Here is a list of reasons why you prestashop store must use voucher to increase sales :
- They're popular
- They're easy to promote
- They're easy to share
- They're incredibly flexible
- They're easily tracked
- They're easy to split test
- They're great for increasing average order value
So, how to prevent your customer use more than one voucher in the same time ? Here is how :
1. Go to: Admin panel/Price Rules/Cart Rules
2. Edit voucher > go to Conditions (menu on the right)
3. Check Compatibility with other cart rules
4. All vouchers > Remove from Combinable cart rules to Uncombinable cart rules
5. From now customer can't use more than one voucher per order.