You should install all of the software prerequisites:
JRE 1.3.1 is embedded in the product on all operating systems except AIX and z/OS.
ln -s /usr/java14 /usr/java131
ln -s /opt/java142 /opt/mqsi/jre
If you are installing on Windows, the WebSphere Business Integration Brokers Launchpad indicates which prerequisite products you need to install and which component they are required for.
On z/OS, the USS SYSLOGD is not a prerequisite for WebSphere Business Integration Event Broker because each address space has a joblog.