When entering a Shift Code for a Golden Key in Borderlands 2, it will say "Submitting code to Gearbox Software Shift... please wait". If the submission fails you might receive the following error messages

Code Already Redeemed[edit]

Message[edit]

Sorry, but the code you have entered has already been redeemed

Cause[edit]

Most likely this code was a limited quantity redemption code, for example only 10,00 codes were made available and they have all been used.

How to Fix[edit]

Enter a code from contest or giveaway as soon as the code is announced. If you wait too long, the code might no longer be availab

Code Not Valid[edit]

Message[edit]

Sorry, but the code you have entered is not valid. Please ensure all 25 characters of the code are entered correctly

Cause[edit]

Most likely you mistyped some character, or are missing a character

How to fix[edit]

Check the code again and re-enter.