As a result, there were cases where shiki made detailed enforcement regulations of kyaku, and from the middle of the Heian period, although on surface, it was politics based on the Ritsuryo codes, it was actually 'kyaku shiki seiji' (politics based on amendments and enforcement regulations of the Ritsuryo).
このため、式が格の施行細則を規定する場合も見られるようになり、平安時代中期以後は律令法に基づいた律令政治という体裁を取りながらも実態は「格式政治」であったと言われている。