Exposcit Debitum (Latin for The Duty requires) is the title of the Papal bull (or 'Apostolic Letter') that gave a second and final approval to the foundation of the Society of Jesus (the Jesuits). It was issued by Pope Julius III on July 21, 1550. It replaced Regimini militantis Ecclesiae of 1540. The structure of the text is basically the same but, based on a 10 years experience, modifications were introduced: