Fizio

i dont know how it is done internally. I only know that it is added via a second code (one for the game and one for the bonus), which is entered on origin (redeem product code)

what? how is the bonus made? ... I did not understand sorry

it should be a bonus code provided by email, if you buy the game from origin ... or at least one EA producer / developer replied thus regarding the bonus:

the next DLC (The Sims 4: Cottage Living) will contain a bonus. Will we return this bonus to Zlorigin as well?