The startup parameters for APPC/MVS are in system PARMLIB member APPCPMxx. These parameters define the local LU to be used for APPC/MVS. They associate the LU with an APPC/MVS transaction scheduler and the DFM TP profile. See Defining PARMLIB Start Parameters for APPC/MVS for more details.

  START APPC,SUB=MSTR,APPC=xx
   where xx is the unique APPCPMxx suffix