Then it was systematized according to the enactment of the Koshitsu Giseirei (act that sets the ceremonies of the Imperial Court, crests of Imperial family, banners, seating arrangement in Imperial ceremonies, etc) in 1926, which is known as 'Kyuchu Sekiji' before World War II.
これを1926年（大正15年）の皇室儀制令によって制度化したのがいわゆる戦前の「宮中席次」である。