Since the transfer of the capital to Heian-Kyo (the ancient capital of Japan in current Kyoto) ruled by Emperor Kanmu, the capital was transferred according to the emperor's declaration and there were no act, laws or ordinances that directly affected the transfer of the capital.
794年に桓武天皇により定められた平安京以来、遷都宣言により法令、憲法または現行法などで直接的な表現で定めたものはない。