(a) Beneficiaries and Shares. If a personal representative or other interested person is in doubt or is unable to determine with certainty beneficiaries entitled to an estate or the shares of any beneficiary of an estate, or a beneficiary entitled to any asset or interest in an estate, the personal representative or other interested person may petition the court to determine beneficiaries.
(b) Petition. The petition shall include:
(1) the names, residences, and post office addresses of all persons who may have an interest, except creditors of the decedent, known to the petitioner or ascertainable by diligent search and inquiry;
(2) a statement of the nature of the interest of each person;
(3) designation of any person believed to be a minor or incapacitated, and whether any person so designated is under legal guardianship in this state;
(4) a statement as to whether petitioner believes that there are, or may be, persons whose names are not known to petitioner who have claims against, or interest in, the estate as beneficiaries.
(c) Order. After formal notice and hearing, the court shall enter an order determining the beneficiaries or the shares and amounts they are entitled to receive, or both.