 However, the last official magisterium document to use "Roman Catholic Church" was issued by Pope Pius XII in 1950.The use of "Catholic Church" is officially used by the Holy See.It is applied in the "Catechism of the Catholic Church" (1990), the Code of Canon Law (1983), in the documents of the Second Vatican Council (1962–1965), the First Vatican Council (1869–1870) and the Council of Trent (1545–1563), and numerous other official documents.