Is it Strata responsibility to have common property clearly marked.

I live in a 50 + Strata Complex in NSW. These Villas are all ground floor. We own the ground the villas are built on. We pay individual council rates and water rates.

There is an ongoing question as to where common property starts and private lots end as there are no markings to indicate the boundaries. We have ongoing disagreements as to where the common property starts and finishes particularly when dealing with trees planted as we have no fences either.

My question is: Is it the Owners Corporation responsibility to make sure the markings indicating the boundaries are present, As say surveyors pegs.?? All lot entitlements are different in area.

Thank you.