The registration code is a 20-digit ID number found on the back of your manual for Pro Evolution Soccer. It is made up of letters and numbers (for example: ABCD-1234-JKLM-7890-UVWX).
For those who purchased the PC downloadable version via the online distribution channel, you should have received an e-mail upon purchase. The Activation Key in that e-mail will serve as your Registration Code. You may also find your Registration Code by entering into the Network Mode of this game. Please select User Registration from the program menu to finish registration.You will need your Registration Code to log in to Network Mode, so be sure to keep it in a safe place, and protect it from others.