In the 10th century, the distinction of Keishi and the household management personnel outside of the law became unclear, and Keishi required by the ritsuryo system were also appointed by Migyosho (a document for informing people of the decision of Third Rank or upper people) of the master.
10世紀に入ると、家司と令外の家政職員との区別が曖昧となり、令制で定められた家司も主人の御教書によって任命されるようになった。