Questão jurídica principal
Whether the tax objection decision was sufficiently shown to have been duly served and thus enforceable as a definitive enforcement title.
Decisão extraída
No. The creditor failed to prove proper service and enforceability of the objection decision; a certificate of finality cannot cure defective service.
Fundamentação extraída
Decisions not served on the affected person generally have no legal effect, do not enter into force, and cannot be enforced. The creditor seeking definitive enforcement bears the burden of proving enforceability, including service. The file contents also contradicted the certificate of finality.