Why would you want to prevent using Gift Certificates and Discount Coupons on the same order?
Gift Certificates are like cash and Discount Coupons are a reduction of the price by amount, percentage or for free shipping ... they are not related to one another ...
If Grandma buys a $100.00 Gift Certificate and sends $50.00 to Tiny Tim, why can't he use both the $50.00 Gift Certificate and the 10% Discount Coupon that he got at the same time on an order for his new crutch? This is $50.00 cash for the Gift Certificate and the 10% Discount Coupon ... so it is the same as using a regular payment plus the 10% Discount Coupon ...
Linda McGrath
If you have to think ... you haven't been zenned ...
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