Finding IDs

Resource location format

Minecraft IDs use:

namespace:path

Examples:

minecraft:the_end
minecraft:end/kill_dragon
twilightforest:twilight_forest
mypack:quests/end_access

Use lowercase IDs unless the providing mod or datapack explicitly defines otherwise. Standard resource locations do not allow spaces.

Finding advancement IDs

Useful methods include:

• Inspecting the advancement JSON file in a mod jar or datapack.
• Using the /advancement command with command suggestions.
• Reviewing the providing mod's documentation.
• Checking a KubeJS or datapack advancement script.
• Searching the server log or generated data.
• Temporarily enabling command suggestions as an operator.

A visible advancement's translated title is not its ID.

For example:

Title: Free the End
ID: minecraft:end/kill_dragon

Finding dimension IDs

Useful methods include:

• Reviewing the dimension mod's documentation.
• Inspecting datapack dimension JSON paths.
• Using commands that provide dimension suggestions.
• Checking the mod's source or registry dump.
• Reviewing teleport or dimension configuration from the providing mod.

A dimension's displayed name is not always its registry ID.

Validate before release

Start a test server and review the Advancement Portals validation summary.

An advancement ID can be syntactically valid but still unknown because:

• The mod providing it is missing.
• A datapack failed to load.
• The ID changed between mod versions.
• The path contains a typo.
• The advancement is generated only under certain conditions.
• The server and client pack contents differ.