There are 2 jobs that issue commands -
F taskname,SHOW UDB=NCLLOG1
uses the IKJEFT01 program. It used to work fine before upgrading to version 13.
But after upgrade we get below error in OPSLOG -
OPS3142W INVALID MESSAGE SIZE FOR MESSAGE BLOCK, DETECTED AT OPMGPR+X'000019C0'
Release : 13.0
Component : OPS/MVS
Modules from mixed releases found in the LNKLST.
Remove the libraries from old releases from LNKLST.
As a work around you can add a STEPLIB for the current OPS release in the job that executes the OPSCMD commands.