Mexico’s Federal Civil Code distinguishes general powers for lawsuits and collections, for acts of administration, and for actos de dominio, acts of ownership. Article 2554 adds an instruction: “Los notarios insertarán este artículo en los testimonios de los poderes que otorguen” (Notaries shall insert this article in the copies of the powers they grant).
Article 2555 requires a mandate to be granted “en escritura pública o en carta poder firmada ante dos testigos” (in a public deed or in a letter of power signed before two witnesses), with the signatures ratified before a notary, among other cases when the power is general.