The closed beta codes will be distributed to random participants who will download the ticket from PSN until February 28, 2017.
NOTE: You can only download the ticket with a Japanese PSN account.
E-mail notification will be sent to you if you are one of the lucky winners to test Gundam Versus.
Visit their official website for more info about beta test policies and schedules.
YOU CAN DOWNLOAD THE BETA TEST APPLICATION TICKET HERE