xbox one x game code reusage

Hello, first it's a pleasure to be able to help you today.

My name is welcome to the community.

Hello István Markó, codes whether games or Gift cards are redeemed in your account and not on your console, in case to play the games your friend redeemed their account would have to be as the primary on Xbox before you can play them.

To find out where the games were redeemed, click the link below and sign in with the account you use on Xbox.

https://account.microsoft.com/billing/orders

Was the console signed into your friend's account when he redeemed the codes? Game codes are applied to the account that redeemed them so they would have been applied to his account. And, unfortunately, nothing can be transferred to a different account

If your game code only says it is for Series X|S then it will not work on an Xbox One X. The One X was the revised Xbox One hardware released in 2017, it's not the same as a Series X.

I am thinking of buying hogwarts legacy as a digital game but it is sold out for Xbox one so should I buy the Series X game and put the code in the Xbox one Store?

No. The series X/S version of the game will only work on the Series X or S.

The only way that would work is if it's a code for the digital deluxe version of the game (which comes with both the series x/s and xbox one versions of the game)

Games released before the Xbox One X is released will more than likely just get a patch (quite a sizable one at that) to get them ready for the X, some may already have all that code built in from the start though, and all it will take is to plug your external
hard drive into the X and press play.

After the Xbox One X is released though most games (not all) will have the "X code" built in, so there shouldn't be any patch updates.

Basically you'll only need to buy one game, there will never be an Xbox One version of a game and a totally different Xbox One X version, all Xbox One games work on either console.