However, shortly after that, the following system was introduced to supervise administration more thoroughly: When an officer was replaced with another person, the former officer made a document describing matters necessary for continuing office duties and handed it over to the new officer, and the new officer issued a certificate showing that he or she accepted the proper document.
しかし、ほどなくして、行政の不徹底を防止・監督するため、官人交替のときに前任者と後任者が事務引継ぎを行い、前任の実績に問題がなければ、後任から前任へ事務引継ぎ完了を証明する文書を発給する制度が導入された。