Custom dimension defined in a data pack cannot be generated and teleport to it.
The "Custom Dimension" is a new feature added in 1.16 Snapshot 20w21a, and became creatable through data packs in 1.16-pre1.
See Minecraft Wiki to learn more about it: [Custom|https://minecraft.gamepedia.com/Custom]
The custom dimension seems doesn't have a level.dat file, and stores in world/dimensions folder. That's I all know.
Thanks a lot.
- duplicates
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SPIGOT-5877 Spigot doesn't recognize vanilla custom dimensions
- Resolved