(1) A set of CICS systems within a CICSplex that can be managed as a single entity.
(2) In CICSPlex SM topology, the user-defined name, description, and content information for a CICS system group. A CICS system group can be made up of CICS systems or other CICS system groups.
(3) In CICS business transaction services (BTS), a BTS set, that is the set of CICS regions across which BTS processes and activities may execute.