I finally after two days got into eshop..I inputted the download code for Zelda and got the error message again.
After several attempts got into eshop again and said could not use the code as it had already been redeemed.
Customer service says they will contact corparate to give you a new code in 1 to 3 business days. Bummer.
Played around found if you go into redownload game purchased it will let you re download the game without a new code.
Good luck everyone!