Selecting versions of CICS programs and tables

A CICS® program is usually made up from a group of related CICS functional modules, one example of which is the terminal control program.

About this task

For most CICS programs you can only have one version, which is supplied with CICS. However, for some CICS programs you can create more than one version; for example, with different service levels. To select a particular version of a program, you can include the load library containing that version in the CICS startup JCL. For the basic mapping support (BMS) suite, however, you can select from different versions, by explicitly selecting the level of function needed.

You can also specify that a program is not needed (see Excluding unwanted programs for details).

You can use these methods only for the programs referred to in this topic and in Excluding unwanted programs, by coding system initialization parameters.