Reservations made upon ratification:
"(a) Article IX, as respects its application in El Salvador, shall be considered as reading as follows:
Article IX. The powers of attorney granted in any of the countries of the Pan American Union in accordance with the foregoing provisions and in conformity with the laws of the country of origin,
shall, for their utilization in any other country of the Union, be considered as granted before a competent notary of the country in which they may be used, without prejudice, however, to the necessity
of protocolization of the instrument in the cases referred to in Article VII.
(b) The reservation is made to Article VIII that official activity of the attorney, as plaintiff or defendant, cannot be admitted in judicial or administrative matters for which Salvadorian laws require that representation be accredited by a special power of attorney."