Deactivating islands in Fortnite Creative and UEFN gives you control over publishing, access, and visibility of your islands. This feature, accessible to Project Owners, Administrators, and Publishers, allows you to hide the island code, making it private while you refine your island. This feature offers flexibility and privacy until you choose to reactivate and publish your project again.
You can also directly publish a new island to a deactivated state to generate a code before the island goes live, enabling you to craft marketing materials ahead of publication.
See https://fn.gg/Deactivate for more information
