error "Looks like that's the wrong code. Please double-check and try again." when applied voucher

[toynbook]

i tried to redeem an ebay voucher (displayed on my summary page with an expiry date not expired yet) on the check out page.

the error message said "Looks like that's the wrong code. Please double-check and try again."

[kopenhagen5]

Check the T&C's.

Often it will exclude certain categories or purchases of certain dollar amounts, max or min.