Overview - The user enters the description (name) of coupon, the amount, the dates between which it is valid, and selects if the coupon is for item only or general purpose. The user selects item only if he wants this coupon Coupons can be applied at the POS in one of two ways ways, at an item level or at a transaction level. Coupons processed at the item level are treated as a reduction in price but coupons run at a transactional level are considered as a negotiable item and are reported on the Real Time Sales report.
Details 
Each Coupon must have its own unique Description. This will show up in all reports and filters so you should name them carefully. If you try to create a coupon with an existing name a popup will displayed asking you to confirm this activity. It is not advisable to create structures with the same name. This will lead to much confusion when reviewing reports.
Select the Amount of the coupon.
Enter the To and From Dates that the discount will be in effect for. It is recommended that if the discount is ongoing pick an annual date that all ongoing discounts terminate, so that you can review their impact annually, and eliminate discounts that are no longer applicable.
Select Item Only if this coupon is to be used only for a specific product. If he wants the coupon
Select General Purpose if this coupon is to be available to use for any item the user selects general purpose.Details .
Click on Save to create the Coupon Code.
Coupons can also be set as an automatic ring up at the POS .
Access - Access to this function at an enterprise level is limited by default to the System Administrator and Financial users only. Accounting, store managers, warehouse general managers as well as zone managers and human resource managers may modify coupon code settings at Venues or Store assigned to them.