Problem redeeming xbox gift card

That's a region error:

Error 80122734 occurs when you try to redeem an Xbox gift card on Xbox 360
Problem

You see the following error code when you try to redeem an Xbox gift card:

• Error 80122734

This means that the currency that the gift card is in doesn’t match the currency used by your Microsoft account. For example, you have a gift card in Canadian dollars. That card can’t be redeemed on a US Microsoft account, which uses US dollars.

Solution

To resolve this problem, you can try to return or exchange the Xbox gift card at the retailer from whom you purchased it. Then, make sure that you obtain a card in the correct currency for your Microsoft account.

There is a sweepstakes to win a $500 gift card, but you can redeem a gift card straight out. Not everything they have to redeem is for a sweepstakes. You can redeem $3.00, $5.00, and $10.00 Xbox gift cards.

Hello liv vanst,

Thank you for contacting the Xbox Support forums. If you received a Roblox gift card, you may need to redeem it directly through Roblox. You can view how to view a Roblox gift card here: How to Redeem Gift Cards – Roblox Support. If you are having difficulties redeeming an official Roblox Gift card, you may need to contact Roblox support directly.

However, if you have an official Microsoft gift card, we can most definitely assist. Most of our gift cards will have steps on how to redeem them on the back of physical cards. Please visit: How to redeem gift cards and codes | Xbox Support for steps on how to redeem a gift card on an Xbox console, PC, or mobile device. If the code is appearing invalid, you may need to confirm the region of the card, try on another device, or look for any errors that may mention that the card has already been claimed.

I hope this helps!

-Tali

yes, gift cards work on the xbox. He'll buy the gift card and redeem the code on his xbox account.

The £10 must be either on a card that says "Xbox Gift Card £10" or you must purchase an Xbox digital gift card code on Amazon for £10 that you redeem here:
https://redeem.microsoft.com/enter

You can't redeem Amazon gift cards or currency in Amazon accounts for currency in your Microsoft/Xbox account - you must buy an Xbox Gift Card (or code) with that money on it.