If you want to apply a coupon to an order in Terminal by scanning its bar code, you will need to register the bar code in Menu Designer.
To Register a Coupon Barcode:
1.In the Menu Tree, expand the Coupons branch, 
and click a coupon.
2.On the General tab, click the Bar Code field.
3.Using a bar code scanner, scan the coupon bar code. The code will appear in the Bar Code field.
4.On the toolbar, click the Save button 
to save your menu.
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