To activate auto-reply processing on a system, you need to specify the AUTORxx member of PARMLIB.
IBM® supplies a suggested auto-reply policy as AUTOR00. You can modify the member (which is not recommended), or define another AUTORxx member to customize the auto-reply policy. If you don't want a WTOR in AUTOR00 to be monitored, your AUTORxx member can override the policy by specifying the NOAUTOREPLY option. If you want to change the reply or delay value, code a new MSGID() statement for the WTOR. When you specify parmlib members, make sure that AUTORxx comes before AUTOR00.
To enable your installation to specify its own auto-reply policy during IPL, or to request that auto-reply processing not be activated, you need to specify an AUTOR= option in the parmlib member IEASYSxx or in response to message IEA101A SPECIFY SYSTEM PARAMETERS.