The document of non-naturalization is a certificate expedited by appropriate authorities (usually the Ministry of Foreign Affairs) that demonstrates that the first Italian citizen has not given up or relinquished their citizenship abroad. If this is the case (according to Italian laws up until 1992), the person has forfeited their Italian citizenship and does not have the right to pass it down to future generations. The certificate proving that their Italian citizenship has not been renounced is issued by the Italian diplomatic authority in the country of emigration of the Italian citizen. This certifies that the individual has never voluntarily renounced their Italian citizenship.
