Contrato de leasing y derivado financiero (swap). Deberes de información previstos en el art. 79 bis LMV. Nulidad total o parcial del contrato. Apreciación del error vicio.: Comentario a la STS, de 2 febrero 2017 (RJ 2017, 389)

It is not legally possible to declare just the invalidity of the financial derivative (swap) by mistake due to the fact it represents and additional agreement and not the whole contract. The non-fulfillment of the duty of pre-contractual information does not suppose the invalidity of the contract in application of art. 6.3 CC.