We want to use the "Discount Coupon" functionality, however there is no capability to restrict or limit only one coupon per purchase.
Say COUPON5 is setup for purchase minimum of Rs. 500
and COUPON10 is setup for purchase minimum of Rs. 1000
If Customer Shops for Rs. 1001 ; then Customers are able to use both COUPON5 and COUPON10, eventually taking 15% total discount. This is major bug, and its highly impact revenue/sales. Please respond asap with recommendations.