Litany of the Saints
In the Catholic Church, both in Latin and Eastern Catholic churches, the act of canonisation is reserved to the Apostolic See and occurs at the conclusion of a long process requiring extensive proof that the candidate for canonisation lived and died in such an exemplary and holy way that he is worthy to be recognised as a saint. The church's official recognition of sanctity implies that the person is now in Heaven and that he may be publicly invoked and mentioned officially in the liturgy of the church, including in the Litany of the Saints. Canonisation allows universal veneration of the saint in the liturgy of the Roman Rite; for permission to venerate merely locally, only beatification is needed.