Inheritance disputes within the Religious Court system require an exceptionally high degree of formal precision, particularly concerning the legitimacy of the parties involved in the case. One of the mandatory formal requirements in drafting a claim is the completeness of legal subjects who have a direct interest in the object of dispute. Failure to include interested parties may result in the claim being deemed formally defective due to the element of plurium litis consortium or a claim lacking necessary parties. Supreme Court Decision Number 512 K/Ag/2022 serves as an important ruling affirming the consistent application of this principle in Islamic inheritance disputes. This study aims to analyze the existence of the principle of plurium litis consortium in the procedural law of the Religious Courts, the legal consequences of an Islamic inheritance claim lacking necessary parties, and the legal considerations of the Supreme Court in Decision Number 512 K/Ag/2022. This research employs normative legal methods with statutory, case, and conceptual approaches. The results show that the principle of plurium litis consortium constitutes a vital instrument to guarantee the protection of the rights of all heirs and to prevent the issuance of rulings potentially detrimental to parties not present at trial. Claims that do not include all interested heirs are deemed formally defective and must be declared inadmissible (niet ontvankelijke verklaard). Supreme Court Decision Number 512 K/Ag/2022 demonstrates a strong orientation toward procedural legal certainty in resolving Islamic inheritance disputes within the Religious Court system.
Publication Date: 2026-05-30