This document describes the authorized services that the MVS operating system provides; that is, services available only to authorized programs. An authorized program must meet one or more of the following requirements:
- Running in supervisor state.
- Running under PSW key 0-7.
- Running APF-authorized.
Some of the services included in this document are not authorized, but are included because they are of greater interest to the system programmer than to the general applications programmer. The functions of these services are of such a nature that their use should be limited to programmers who write authorized programs.
Services are also included if they have one or more authorized parameters, that is, parameters available only to authorized programs.