This message can be suppressed only by the following methods:
Use runtime option MCOSYS if everyone wants it suppressed
Use runtime option MCOUSR if some users wants the message suppressed
Use a JCLCheck Error exit. A sample Assembler Error exit is located in the JCLCheck CAZ2SRC library, and is named CAZ1XERR. After modifying CAZ1XERR, apply Usermod MZ1C030 from the CAZ2JCL library to install (assemble and link) the exit. To activate the Error exit, use runtime option DYN(XERR) when running JCLCheck.
Use the REXX interface, and suppress the message in the MSG_PROCESSING routine. To activate the REXX interface, use runtime option STDREXX(pgmname) and REXXMSG.
Apply Usermod MZ2C023 with the following statement: #92 $DMSG 'JOBLIB/STEPLIB NOT REQUIRED FOR PROGRAM',,SEV=SUPPRESS