In case the warehouse was required to be opened, each province had to submit a dajokanpu called Fudoso kaiken shinsei-ge to Daijokan for permission; then receiving a document called Fudo kaiyofu or Fudo-jufu issued from Daijokan along with the key, it was able to be opened.
開封が必要な場合には不動倉開検申請解と呼ばれる解_(公文書)を太政官に提出して許可を求め、不動開用符または不動充符と呼ばれる太政官符の交付とともに鑰の返送を得て初めて開封が行われた。