FALLOUT 3 code does not work

Thanks for your answer/

Where can I see my account region?

When I tried to change my region It doesn't work.

I live in an Xbox Live country (France).

Does your account region match your actual region if no that would be why

Your account region must reflect your actual region

You must use the region migration tool in this website under account and change my region

Please note you must live in an xbox live country or don't use the tool you will lose your membership if you migrate to an non xbox live region

After changing your region you must change the console region to match

If you don't live in an xbox live region there is nothing you can do.

well i have seen reports from several people saying they could not use the code on 360.

source:
www.trueachievements.com/.../viewthread.aspx

"If the fallout 3 code is from fallout 4, it is only playable on X1."

"Sorry, off topic a bit, but I bought a Fallout 3 code that came from Fallout 4 and it only plays on Xbox One."

"Mine doesn't and nor does two of my friends." (work on 360)

Fallout 3 gives me the exact same issue, so apparently it does not agree with that conclusion. And that is the game I actually bought, the others are prepaid codes given to me by a friend. The Microsoft Support Tech told me that the Fallout 3 code was also
a regional issue. I have tried many, many times to get it to work and to no avail. So if it's supposed to work, what should I do?

This seems no longer to be true.

Games purchased from other regions will play if physical disk, but any connected download codes will not work.

There are issues for example with the Gears of War 1-3 codes (included with Gears of War collection) and the Fallout 3 codes (that came with Fallout 4).