/reload

{
    "title": "<code>/reload</code>",
    "rows": [
        {
            "field": "2",
            "label": "(link to Permission level article, displayed as Permission level<br>required)"
        },
        {
            "field": "(link to Cheat article, displayed as Cheat) only‌<sup class=\" nowrap Inline-Template \" title=\"\">[<i><span title=\"This statement only applies to Bedrock Edition\">(link to Bedrock Edition article, displayed as BE)  only</span></i>]</sup>",
            "label": "(link to Commands#Restrictions article, displayed as Restrictions)"
        }
    ],
    "invimages": [],
    "images": []
}

Reloads data packs in Java Edition, or reloads functions and scripts in behavior packs in Bedrock Edition.

If a data pack or behavior pack has invalid data (such as an invalid recipe format), changes are not applied and the game continues using the previous data.^{[needs testing in Bedrock Edition]}

reload

Reloads the current data packs in Java Edition, or functions and scripts in Bedrock Edition. For data packs, any definitions considered experimental by the game (i.e. marked with an asterisk here) are not reloaded; the player must leave and rejoin the world to reload these.

reload all‌^{[Bedrock Edition only]}

Makes the player quit the world and rejoin, as well as reloading all behavior and resource packs.

Always successful.

• The /datapack enable and /datapack disable commands can also be used to reload data packs.‌^{[Java Edition only]}

• "/reload Command" – Microsoft Learn, December 4, 2024.