They should have to make up the hours - the punishment just being “follow the rules” is hardly appropriate.
The breach now identified by ACMA arose out of a miscommunication, compounded by having two different types of broadcast licence in Mildura, one of which is exempt from local programming requirements.
If I can work out how their licenses work - they have no excuses. It was extremely clear in the legislation, and you’d think reading that over before acquiring a regional TV network would be worth it.