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AIX TE is like SELINUX, check for system and files integrity
TE will prevent you from updating your system, then you have to disable it, and enable at the end of upgrade.
root@aixsrv1 - /root > for i in TE CHKEXEC CHKSHLIB CHKSCRIPT CHKKERNEXT STOP_UNTRUSTD STOP_ON_CHKFAIL TEP TLP TSD_FILES_LOCK TSD_LOCK do trustchk -p $i done TE=ON CHKEXEC=ON CHKSHLIB=ON CHKSCRIPT=ON CHKKERNEXT=ON STOP_UNTRUSTD=OFF STOP_ON_CHKFAIL=ON TEP=OFF TEP=/usr/bin:/usr/sbin:/etc:/bin:/sbin:/sbin/helpers/jfs2:/usr/lib/instl:/usr/ccs/bin:/usr/lib:/usr/lib/security TLP=OFF TLP=/usr/lib:/usr/ccs/lib:/lib:/var/lib TSD_FILES_LOCK=OFF TSD_LOCK=ON
root@aixsrv1 - /root > for i in TE CHKEXEC TEP TLP do trustchk -p $i=OFF done