I can't buy a 360 dlc for my xbox one.

If the DLC is for the Xbox One version of the game, then no, you can't use that DLC on the Xbox 360 version of the game.

For example, Assassins Creed IV Black Flag is a Backwards Compatible Xbox 360 game that works on the Xbox One. However, if you buy Xbox One DLC, then this will NOT work on the Xbox 360 version of the game.

But if you get the Xbox 360 DLC content for a Backwards Compatible game, the DLC will work on the emulated Xbox 360 on Xbox One.

You are able to download the DLC on Xbox One, but it won't work since the DLC is for the 360. For example, you can't buy a game for PS3 and expect it to work on the PS4.

That is very helpful actually I didn't realise that buying some DLC is not possible though Xbox 360 emulation on the Xbox One. With this is mind, if I were to buy the DLC content on a standalone Xbox 360, would I be able to play the DLC (bought on the
Xbox 360) through Xbox 360 emulation on the Xbox One?

I am also having the same issue. I own the 360 version of Borderlands 2: GOTY Edition. My old 360 has the DLC, I have save files for every character type including the ones only available on DLC. I still have both disc's, but the DLC disc is completely
unread and ignored by my Xbox One. I have cloud saved my saves from my 360, and now I have characters I can't play on my Xbox One because it doesn't have the DLC that I own. I have checked the Queue, they are not waiting to be downloaded. In game, when
I select any DLC, it prompts me to the store to buy it again.

Why can't I get my DLC from cod on my 360 to my xbox one !?!?!?!