The customary law of the Roma, which is still prevalent today, regulates relations among the Roma. Therefore, it can be considered as established, expected, and socially accepted behavior within Roma communities. Roma communities use customary law to determine goods of exceptional importance to the Roma community and the means of protecting them. Krisi (romanes, Roma court) is a part of Roma customary law and represents the only method for asserting rights within Roma communities. Krisi, as an accusatorial process, deals with matters of various legal characteristics, with the goal of maintaining the well-being and peaceful coexistence of members of the Roma community. It exhibits elements, principles, and characteristics of arbitration, criminal procedural law, civil procedural law, and criminal sanctions of Croatian positive law and international law. The Krisi procedure is primarily intended for Roma, and the role of krisators (romanes, judges) is exclusive to Roma. Krisi is convened ad hoc, and the krisators mandate is limited to a specific dispute. Only respected members of the Roma community are considered for the appointment of krisators, highlighting the importance of honor and prestige within Roma communities. Apart from Roma identity, patriarchal aspects of Roma families influence their partisan, procedural, and debating abilities, with the family's father/husband being responsible for representation. The Krisi process is divided into two phases. The first phase is the preliminary procedure, which includes mediation, aimed at determining the willingness of the defendant/offender to engage in the process. The second phase is the debate, which is the central stage of Krisi and can only be held if both parties are present. Any violation of customs that infringes upon the rights of others requires a peaceful resolution of the situation and the avoidance of retaliation by the opposing parties. Breaches of customary behavior, as there is no crime or punishment without custom (Latin, nullum crimen, nulla poena sine more), are considered private delicts. Punishable conduct, in most cases, arises from the norms of natural law (Latin, mala in se). The concept of punishment in the Roma language includes globa with the meaning of a monetary penalty and štrafo with the meaning of a non-monetary penalty in Krisi. Practice shows a significant preference for imposing monetary fines. The Roma community also recognizes security measures in the form of prohibitions. Non-monetary penalties relate to the punishment pekelime (romanes: expulsion; exile from the Roma community). Prohibitions are imposed according to circumstances appropriate for achieving the purpose in the specific case, so their number and content are not predetermined but left to the discretion of the krisators. The Krisi process and the execution of decisions are based on the consent of the parties involved, and the decisions made must be proportionate to the committed act. The entire system is based on the consensus of wills because there is no mechanism for forced participation in the process or the enforcement of decisions, which might eventually lead to the involvement of state institutions. What allows for the relative closedness of the community is the determination of infamy status for such individuals.