Enabling Hybrid BSO Cubes
in Oracle® Fusion Cloud EPM Administering Planning PDF document (chapter 3-12 and 13) it says:
"For legacy environments, a self-service operation using the recreate EPM Automate Utility command is available to upgrade Non-Hybrid Essbase to Hybrid Essbase. After upgrading Essbase, you can enable Hybrid BSO cubes in Enterprise Planning and Budgeting Cloud. You can upgrade legacy Planning and Budgeting Cloud environments to use Hybrid Essbase. However, you cannot enable the use of Hybrid BSO cubes in these environments."
and also says:
"Migration of applications from legacy Planning and Budgeting Cloud, Enterprise Planning and Budgeting Cloud, and Planning and Budgeting Cloud with Plus One option creates standard BSO cubes, which you may convert to Hybrid cubes."