A confirmation email will also be sent to the email address registered to your Nintendo Account once this process is completed.Re-enter your Nintendo Account password when prompted, then select 'Redeem' to complete the process.Enter your 16-digit download code and then select 'Next'.If you are already signed in, check the user information in the top-right corner to confirm you are signed in with the correct Nintendo Account.Select 'Sign in' and enter your Nintendo Account email address and password, and then select 'Sign In'.Theme download codes must be redeemed in the Theme Shop on your Nintendo 3DS system.In-game DLC must be redeemed within the specific Nintendo 3DS game.On Nintendo 3DS, download codes for in-game DLC and themes cannot be redeemed online.Note: If you would like to redeem your download code directly on your Nintendo Switch console, please see our information on redeeming a download code on Nintendo eShop for Nintendo Switch.If you are redeeming a download code for Nintendo Switch content, you must first access Nintendo eShop on Nintendo Switch using your Nintendo Account at least once.If you are redeeming a download code on a Wii U console or Nintendo 3DS system, you must also link your Nintendo Network ID to your Nintendo Account.My JP Nintendo account accepted the code with no issue.