Found the solution. Have to login to XtremIO as user "tech"
I have hundreds of LUNs that were members of a RecoverPoint consistency Group about 5 years ago. That RecoverPoint has long since been retired. I want to delete these LUNs now, but the system will not allow it due to still members of the old CG. I have tried deleting the CG but that fails due to CG owned by rp_user and cannot be deleted.
Cannot Delete LUN. Member of legacy RecoverPoint Consistency Group