In other words, there was the following merit in assuming the post: A person at the obanyaku post could be assigned to the post of suke (provisional governor), gon-no-suke (provisional vice governor) or jo (secretary of provincial offices) in his original province, gaining a position in the imperial court and having his control right backed by the authority of the imperial court.
つまり自らが在地している令制国の介・権介・掾に任命してもらう事で在庁官人としての地位を手にし、支配権を朝廷の権威に裏打ちしてもらうと言う利点があった。