我已经设置了一个非常基本的促销购物车价格规则（Magento版本1.6.2.0），只是为了测试此功能在我的网站中有效...但总是收到相同的消息：＆＃34;优惠券代码是无效＆＃34; 我为此疯狂...... 这些是我使用的参数：
RULE INFORMATION
General Information
Rule Name *: 10% Off
Description: 10% Off
Status *: Active
Websites *: ALL selected
Customer Groups *: ALL selected
Coupon *: Specific Coupon
Coupon Code *: coupon01
Uses per Coupon: 100
Uses per Customer: 1
From Date: 05/04/2013
To Date: 05/04/2015
Priority: 0
Public In RSS Feed: No
CONDITIONS
If ALL of these conditions are TRUE :
Subtotal equals or greater than 0
ACTIONS
Update prices using the following information
Apply: Percent of Product Price Discount
Discount Amount *: 10
Maximum Qty Discount is Applied To: 0
Discount Qty Step (Buy X): 0
Apply to Shipping Amount: No
Free Shipping: No
Stop Further Rules Processing: No
Apply the rule only to cart items matching the following conditions (leave blank for all items)
If ALL of these conditions are TRUE :
None
LABELS
None
请详细说明是什么导致此失败？ 我可以在任何地方跟踪php错误吗？检查system.log或exception.log文件时...根本没有与优惠券相关的错误。