What "invalid code" means
When you enter a Nintendo eShop gift card code and see "This code is invalid" or "This code has already been redeemed," it does not always mean the card is defective. In most cases the cause is technical and easy to resolve.
The error can appear on a Nintendo Switch when entering the code directly in the eShop, or on the Nintendo website in a browser. Let's go through every possible cause.
Main causes of the error
Region mismatch. The most common cause. Nintendo ties codes to a specific region: a Turkish card will not activate on a US account, and a European card will not work on a Japanese one. Always check the card region against your Nintendo account region.
Card already redeemed. If the code was purchased earlier or used by someone else, it cannot be activated again. This is especially important when buying from unverified sellers.
Typo when entering the code. The letter O is easily confused with the number 0, and the letter I with the number 1. The code is 16 characters and case-sensitive. Use the Nintendo Switch camera function to scan the code automatically.
Nintendo server issue. Sometimes eShop servers are temporarily unavailable or under load. The error resolves on its own within 10–30 minutes.
Step-by-step fix
Step 1. Check the card region. Find out which region your card is for (usually stated in the product description). Then open your Nintendo account settings and confirm the region matches.
Step 2. Verify the code manually. Copy the code into a text editor and examine each character carefully. Correct any possible typos, then copy and paste the corrected code into the entry field.
Step 3. Use the Switch camera. On the console: eShop → "Add Funds" → "Use a Code" → press the camera button. Point the Switch camera at the QR code or the code on screen — it will be scanned automatically.
Step 4. Try redeeming on the website. Go to accounts.nintendo.com, sign in to the correct regional account, and enter the code in the "Redeem" section.
Step 5. Wait and try again. If the problem is not a region issue or a typo, wait 15–30 minutes and try again.
Step 6. Contact support. If none of the steps worked, contact the seller. When buying on Marix, support is available around the clock.
Frequently asked questions
Can I change my account region to activate a card from a different region? Yes, you can change your Nintendo account region in My Nintendo settings. Keep in mind that your eShop balance is region-tied, and funds may become inaccessible after switching regions.
The card came from Marix but won't activate — what should I do? Contact Marix support with a photo or screenshot of the error. We will verify the code and promptly replace the card or issue a refund.
Why does the Nintendo website show a different error message? Nintendo displays different wording depending on the platform (Switch, website, app), but the underlying causes are the same: region mismatch, already redeemed, or a typo.
Buy Nintendo gift cards on Marix — all codes are verified before sale. Buy working Nintendo cards on Marix