However, since actual government affairs were performed by sekkan-ke and powerful nobles who were also the most powerful manor lords, and kokushi, towards the end of their term, who had a tendency to approve manors by powerful nobles as a form of office-seeking activity to secure their next post, it was not very effective with many exceptional cases.
だが、実際の政務を行っているのが最大の荘園領主である摂関家以下有力貴族であったこと、国司側も任期が終了に近づくと次の役職を得るための一種の猟官運動として有力貴族による荘園実施を認める傾向にあったために多くの例外が生まれ、実効性が乏しかった。