In the mid Heian period, daiokancho and innochocho were replaced by Kan senji (an edict from Daijokan [Grand Council of State] which had the status of a binding official document) and Inzen (a decree from the retired Emperor) which did not require shoin (a ceremony to seal documents issued by the government) while the number of cho issued increased due to an increase in number of Ryoge no kan in agencies such as Kurodo dokoro (the Office of Imperial Household Logistics) and Kebiishicho (Office of Police and Judicial Chief).
平安時代中期に入ると、太政官牒・院庁牒は請印が不要な官宣旨・院宣にその役目を取って代わられる一方で、蔵人所・検非違使庁をはじめとした令外官の増大で牒そのものの発給は増大した。