Not all units are available for enrolment in WES (e.g. research and exchange units).
Action: Your faculty doesn't allow online enrolment for this unit. Submit an Enrolment Amendment Form.

Forced location.
Action: You can enrol in units only at the campus specified.

Unit not offered.
Action: Monash does not offer the unit in that semester.

Unit code or name possibly changed.
Action: Check the Handbook for current unit information.