Suino' was originally in charge of taking managing money and materials exclusively for the Bureau of Archives; however, as the Imperial Court was losing authority and accordingly the court offices stopped their functions during the warring period, 'suino' began to provide the service for other imperial offices.
出納は本来は蔵人所のみの金品の出納を担当していたが、戦乱期の朝廷機構の衰退に伴って諸官司が機能停止していく中で、その職掌は朝廷各部門の出納業務へと拡大の方向に向かっていった。