F) Certifications on request
This is no news for people following charts and sales domain, but just like for other countries certifications in Japan are not automatic. Instead, majors must request Gold / Platinum awards to RIAJ in order to get their records certified.
We need to highlight one more time that prior 1989 there was no certification at all and that newly introduced certifications weren’t retroactive. Clearly, many post-89 albums haven’t been updated properly. An example of that among many others is Michael Jackson 1995 album History which registered 585,000 sales on Oricon alone within’ four months but still never got certified 3xPlatinum.