Warzone Req Pack Transfer

I bought the digital download premium addition for my son. The warzone req packs show up on my gamer tag. How do I transfer them to my son’s gamer tag since I bought the game for him?

I don’t think you can. You would have had to have bought it for him while he was signed in instead. Did you try contacting Xbox Live Support? I’m assuming they would have the power to transfer the micro-transaction?