Magento 1.9 – Coupon Code for Whole Cart Not Applied to Multiple Items

Firstly you should never make changes to the core files. This includes your layout and template files located in the base folders. This would be considered a core hack, and will lead to issues down the road, especially when you upgrade.

The correct way to remove the coupon is via your local theme. There are a few different ways to apply this. One is via your theme local.xml file.

This file can be located in various places, all depending if you just use a theme, or a package, with a theme.

In this example, I am using a package, and the file is thus located here: /app/design/frontend/YOUR _PACKAGE/default/layout/local.xml

In there you will have a directive as such:

<checkout_cart_index>
 <reference name="checkout.cart">
    <remove name="checkout.cart.coupon"/>
 </reference>
</checkout_cart_index>

Hope that helps

You can import same list of coupon codes into each rule.

Do not forget to remove unique index from the table salesrule_coupon per another question in your post.

Then each coupon code will trigger both rules, and one will match.