In 1720, when he protested Pope Clement XI's decree that only members of the painter's guild, Accademia di San Luca, could teach drawing, and had the ruling got revoked.
In 1720, when he protested the Adademia di San Luca's decree that only members of the painter's guild or accepted by the Accademia di San Luca, could teach drawing. He appealed to the councils of Pope Clement XI and had the ruling got revoked.