PROD={aa }
{(aa,bb...)}The two alphanumeric characters (aa or bb) are appended to IFAPRD to identify an IFAPRDxx parmlib member. If you do not specify the PROD parameter, there is no active enablement policy; all products that attempt to register are treated as not found.
To change the IFAPRDxx member(s) after IPL, the operator can issue the SET PROD command to specify one or more different active members, Some products check the enablement policy during IPL; a policy change for such a product does not take effect until the next IPL.