As the code was not codified nor promulgated, Emperor Tenmu, who provoked the Jinshin war/ disturbance, was not obliged to follow Fukai-no-Joten/ Fukaijoten, but Empress Jito, a daughter of Emperor Tenji, and other descendents of the female line took the lead in persuading him and made him follow.
この法は成文・公布されたものではなかったが、壬申の乱を起こした天武天皇は不改常典に縛られなかったが、天智の娘である持統天皇ら天智の女系子孫が中心になって伝え、守らせた。