Parameter in IEASYSxx (or specified by the operator)

PROG=xx

The two-character identifier xx is appended to PROG to identify the PROGxx parmlib member. xx can be any two alphanumeric characters (A-Z, 0-9) or (@, #, or $).

You can also specify multiple PROGxx members on this parameter. For example, you can specify two active members using the form PROG=(01,02).

Regardless of whether you specify the PROG=xx parameter, the system always places the following libraries in the APF list:
Note: In addition, any module in the link pack area (pageable LPA, modified LPA, fixed LPA, or dynamic LPA) will be treated by the system as though it came from an APF-authorized library. Ensure that you have properly protected SYS1.LPALIB and any other library that contributes modules to the link pack area to avoid system security and integrity exposures, just as you would protect any APF-authorized library.