LPA= {aa }
{(aa,bb,...[,L])}The two characters (A-Z, 0-9, @, #, or $), represented by aa (or bb, and so forth), are appended to LPALST to form the name of the LPALSTxx parmlib member(s). If the L option is specified, the system displays (at the operator's console) the names of the data sets successfully concatenated to SYS1.LPALIB.
The LPA parameter is only effective during cold starts, or during IPLs in which you specify the CLPA option. The LPA parameter does not apply to modules requested through the MLPA option.