Information from Square-Enix below on how and why .

Recruitment Campaign
After completing registration, use the recruitment code below. When you pay for a subscription, you'll receive an exclusive in-game item reward.

Recruitment Code: URVPMXSJ
Recruitment Code: 2HGNDH9E

Entering Your Recruitment Code You will need to log into the FINAL FANTASY XIV: Mog Station to enter your recruitment code after completing registration. After logging in, proceed to Your Account, then select Enter Recruitment Code. http://sqex.to/Msp

If you wish to redeem a recruitment code, it must be entered before purchase of a subscription or game time card. Bonus items cannot be obtained if a subscription has been purchased prior to use of a recruitment code.

Recruitment codes are valid for 120 days after they are generated. Bonus Items Please refer to the page below for more details on bonus items. http://sqex.to/Cz9