After upgrading to Top Secret Release 15.0, Top Secret is starting as a Subsystem without making any changes to the normal IPL process. Starting Top Secret as a subsystem is an optional enhancement to the product.
If Top Secret is starting as a Subsystem you will see the following messages:
*TSS9069W TSS Started as a Subsystem, JES Sysout Unavailable. *TSS2069I Subsystem TSS is Active.
Since we are now establishing a subsystem with the name TSS, the Top Secret started task will need to change to a different name to force it to run under the JES Subsystem. Modify commands and Stop commands will still use F TSS or P TSS respectively. There will be no changes in the way Top Secret works.