In the CA Datacom Server mainframe start options, optionally specify:
(Optional) Denotes whether the connect/disconnect messages, DSV00035I and DSV00036I, respectively, are to appear on the console/JESLOG of the Server Mainframe address space. A value of NO means that DSV00035I and DSV00036I messages are not suppressed and appear on the console/JESLOG (z/OS) and in the SYSPRINT output console. A value of YES means that they are suppressed from the console/JESLOG but are written to the SYSPRINT output file. A value of ALL suppresses ALL messages and nothing is written including any warning or error messages.
Valid Entries: NO, YES, or ALL
Also, to issue or modify the SUPMSG option for an active CA Datacom Server, you can issue the console command to modify the option.
/F serverjob,MODIFY OPTION,SUPMSG=value