(1) To allocate static storage for a program.
(2) To make a resource ready to perform its function.
(3) To validate the contents of a policy set and then make it the active policy set.
(4) To establish a new storage management policy for the storage management subsystem (SMS) complex by loading the contents of a source control data set (SCDS) into SMS address-space storage and into an active control data set (ACDS), or loading the contents of an existing ACDS into SMS address-space storage.