Section 1
SECTION 1. Section seven of Act Numbered Four thousand and fifty-four, entitled “An Act to promote the wellbeing of tenants (aparceros) in agricultural lands devoted to the production of rice and to regulate the relations between them and the landlords of said lands, and for other purposes," is hereby amended so as to read as follows: "SEC. 7. Rules governing tenancy contracts.—In any contract of tenancy mentioned in this Act, the contracting parties shall be free to enter into any or all kinds of agreements or stipulations so long as they are not contrary to existing laws, customs, morals and public policy, and such contract shall be conclusive evidence of what has been agreed upon between the contracting parties, except in case of fraud or error, if their stipulations are not denounced or impugned within thirty days from its registration in the office of the municipal treasurer, as provided in section five of this Act."