When acting in representation of an interessat through a qualified digital certificate from representant, the doubt may arise about whether it is necessary to register for REPRESENTA la representation that appears on the certificate. The answer is that it is not necessary to register this representation, since the mere fact of having the certificate already certifies the relationship of representation between the two people.
For this reason, when attempting to register a representation to the REPRESENTA with one of these types of certificates that already includes the NIF of the representant (natural person) and the representat (legal entity), the platform returns a warning indicating that registration of this combination of NIFs is not possible. You will find a detailed explanation in the FAQ You must register the representations when using a certificate representawhat? Available at Portal Support Representa.