When running multiple mods, JSON conflicts occur if two mods define the same object. The matters. DayZ will merge arrays but may overwrite objects. Use a tool like DayZ Mod Merger (GitHub) to intelligently combine types.xml from different mods.
This guide breaks down what DayZ JSON files are, how they are structured, and how you can edit them to customize your server. dayz json files
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If you run a modded server, you likely use the mod, which adds a massive layer of JSON configuration. When running multiple mods, JSON conflicts occur if