Redeem history

You can check anything that was added to your gamertag at commerce.microsoft.com

As for a trial code it only gives limited access to some online features. Also, your gamertag will only remain as a Silver membership while on a trial code and will not convert to a Gold membership.

It did redeem though as the OP noted it is in their purchase history...it's just not available to download

"cause I redeemed it and it shows in my purchase history"

And is there no way to check everything in your history unless it's billed? Seems a bit of an oversight, but thanks!

There isn't a redeemed code history as such, but everything you purchase on the store, whether it be via a code, money in your account or a credit card, will all be available to download again as many times as you like. The ownership of any content you
buy will remain yours in your account.

Its not in my purchase history, but i would think that it is in my friends history, since he purchased the game. I have the code for it, but when i try to redeem it, it says "Code Already Redeemed".