The current Spanish constitution refers to the monarchy as "The Crown" and the constitutional title of the monarch is simply rey/reina de España: that is, "king/queen of Spain". However, the constitution allows for the use of other historic titles pertaining to the Spanish monarchy, without specifying them. A royal decree promulgated 6 November 1987 at the Council of Ministers regulates the titles further, and on that basis the monarch of Spain has a right to use ("may use") those other titles appertaining to the Crown. Contrary to some belief, the long titulary that contains the list of over 20 kingdoms is not in state use, nor is it used in Spanish diplomacy. In fact, it has never been in use in that form, as "Spain" was never a part of the list in the pre-1837 era when the long list was officially used.
Spain, mentioned differently in the titulary depending on which monarch was reigning, was for more than three centuries also symbolized by the long list that started "... of Castile, León, Aragón, ..." The following long titulary in the feudal style was last used officially in 1836 by Queen Isabella II (see the account of titulary in her article) before she became constitutional queen.