where do I put the 15 anv code in

[Lambo Insecta]

I just got gt 6 15thA and I was wondering where do I put in the code?

 

[Mini Stiggy]

 

[JK83]

PSN store Redeem codes

 

[Famine]

Playstation Store.

Just above where the code is printed there's ordered instructions on how to redeem it. Step 2 is "Visit Playstation Store on your PS3 or Vita system"...