Using the NOOUTPUT makes the program to not wait for the response or better, the response is not requested.
Add the NOOUTPUT option to the MSG statements.
ADDRESS 'OPSCTL' "MSF DEFINE MSFID("sys_id") APPLID("applid") RETRY(30,120) APPC NOOUTPUT"
"MSF START NOOUTPUT"
"MSF ACTIVATE MSFID(ALL) NOOUTPUT"
No OPS3162W errors.