Here's the excerpts from a favorable ACS letter.
<i class="Italic">Please note that the Department of Immigration and Border Protection reserves the right to undertake
further investigation regarding your skilled employment experience.
While the ACS is authorised to assess ICT skills assessments, the final decision in awarding points
remains with the Department of Immigration and Border Protection.
This assessment is based upon the documents provided. By issuing this letter or otherwise, the ACS
makes no representation regarding:
β’ The authenticity of documentation provided or the veracity of content.
β’ The suitability of the applicant for migration or employment. </i>
As per my understanding, it says that DIBP has the final say in awarding points. When lodging an EOI, you are declaring points to the DIBP.
With that said, some states have specific instructions that strictly implements ACS assessment "equate to work" like South Australia and probably NSW.
my 2cents. π