Fallout 3 code won't work

It don't appear one the xbox one store I retry today with the code I obtain with the preorder of fallout 4 on my xbox one and it won't work at all like I said my code dont work because of a bug when I download it so it's like a use the code but I don't send
my back another code for fallout 3 plz

Hey DaintierSumo35,

Where did you purchase Fallout 4? If you bought the disc version of Fallout 4 and the Fallout 3 code has already been used, unfortunately we won't be able to replace the code.

Same here. I downloaded Fallout 3 that came with Fallout 4 and the was code was accepted. However the game won't load, displaying that if I own the game or no and I should insert the disc. The code that came with the message was Ox803f8001 but no matter
how much I try, the game won't load.

Are you trying to use the regular fallout 3 disc or the game of the year edition? I've read a lot of posts saying there are problems with the game of the year edition saying it won't work or it won't let you install the dlc. Do you have any other backwards
compatible discs that won't work either or is it just fallout?

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).