Originally, it was arranged so that the kuzen-an was handed to the working-level officials and then the same order was issued by the Daijokan to the working-level officials -- Later, the step of issuing the order at the Daijokan was omitted, and the kuzen-an was considered to be the formal rescript.
本来は口宣案が担当者に渡された後に、全く同じ内容の命令が太政官から担当者に宣下される手筈となっていたが、後には太政官での宣下手続が省略されて、口宣案をもって正式な命令証書とみなされるようになった。