After the mid Heian period, official duties were gradually replaced by posts such as Tsukumodokoro (the post responsible for procuring furnishing goods for the Imperial Court), Mokkoryo (Bureau of Carpentry), and Shurishiki (Office of Palace Repairs), and gradually became a mere facade.
平安時代中期を過ぎると次第に職掌を作物所（つくもどころ）や木工寮・修理職に奪われ形骸化していった。