Registration is not required therefore it is not necessary to do it in the Consul’s notary book. The party interested can bring the power of attorney in printed form and subsequently sign it before the Consul, who will validate your signature accordingly. 

Before scheduling an appointment for this signature, a copy of the said document must be sent via electronic email to the Costa Rican Consulate of the party’s jurisdiction, this is done so as to verify that the use of the notary registry is indeed not required. Consulate of your jurisdiction.