 The bull of Pope Innocent III resulted in increasingly elaborate inquiries to the Apostolic See concerning canonizations.Because the decretal of Pope Alexander III did not end all controversy and some bishops did not obey it in so far as it regarded beatification, the right of which they had certainly possessed hitherto, Pope Urban VIII issued the Apostolic letter "Caelestis Hierusalem cives" of 5 July 1634 that exclusively reserved to the Apostolic See both its immemorial right of canonization and that of beatification.He further regulated both of these acts by issuing his "Decreta servanda in beatificatione et canonizatione Sanctorum" on 12 March 1642.