Create an AddressableGroup for your assets. (Window/AssetManagement/Addressables/Groups).
Set your assets as addressabble and in the groups menu drag them to your new group.
Go to the Assets/Content/Data/Databases folder, and create a new AssetDatabase by going to Create/SS3D/AssetDatabase.
Set your AddressablesGroup in the inspector.
Go to ProjectSettings/SS3D/Assets/AssetDatabaseSettings
Press find and load asset databases.
Check if your new database code was generated in the Assets/Scripts/SS3D/Data/Generated folder