Questione giuridica chiave
Whether the complaint could seek a declaratory finding that the appellant operated an agricultural enterprise at the relevant time.
Decisione estratta
No separate declaratory judgment was needed; the issue could only be treated as a preliminary question, so the declaratory request was inadmissible.
Motivazione estratta
Preliminary questions are decided in the reasons without res judicata effect; a formal declaration was unnecessary, while a remand request remained sufficient.