Examiner's Report-Petition and Order for Summons

The examiner's report shall specify the names of all parties deemed necessary parties defendant. Petitions for summons shall set forth those names and the names of such other parties as the applicant deems to be necessary, and the names, if known to the applicant, or ascertainable by reasonable inquiry of the successors in interest of such persons known to the applicant to be deceased. The petition shall recite that the petitioner has made a diligent effort by reasonable inquiry and search to ascertain the place of residence of all defendants named therein, and where the place of residence of a defendant is unknown to the petitioner, the petition shall so state such fact.