I have a shopping cart screen with Google Checkout button in it. This shopping cart screen has a Coupon Code Field. However, in this checkout screen, when I entered a correct coupon code, an error message will prompt and says: "Free Shipping Coupon cannot be entered on this screen or on the Google Checkout Screen. Proceed with regular checkout to use your Free Shipping Coupon." It is confusing for Buyers that this field exist in the shopping cart screen but it doesnt work. It will only work when I do the regular checkout. But my main concern is, will I be able to remove this field in this page while having it during the normal checkout?
And also, can I use the same coupon code for Google Checkout?