Agent's silent installer failed with an exception:
Custom Action: cybermation.iainstaller.library.CybFatalEULAException
Status: FATAL ERROR
Additional Notes: FATAL ERROR - class cybermation.iainstaller.library.CybFatalEULAException FatalInstallException:
Release: DSWAHA01300-12-Workload Automation DE-High Availability
in the unix_installer.properties file; by default, the assigned value is REJECT and so the complaint you have seen in the log file.
Due to the silence of the installer, you are not supposed to be asked for the license acceptance.