 Carlism is a movement in that seeks the establishment of another line of the Bourbon family on the Spanish throne, in preference to the current Spanish King, Felipe VI.Carlists dispute that Ferdinand VII had the authority to change the Spanish monarchy's line of succession by issuing the Pragmatic Sanction of 1830 and claim that such document was without legal effect.The Pragmatica Sanción resulted in Fernando's daughter Isabella II, rather than his brother, Infante Carlos, becoming the Spanish monarch.