Parameter in IEASYSxx (or supplied by the operator)

SMF=xx
The two alphanumeric characters, represented by xx, are appended to SMFPRM to identify the SMFPRMxx member of parmlib. If the parameter is not specified either in IEASYSxx or by the operator, the system uses parmlib member SMFPRM00. If the parmlib does not contain an SMFPRM00 member, the system uses the defaults provided by SMF.