What makes a requirement binding here
The Therapeutic Goods Act 1989 (No. 21, 1990), which regulates medicines, medical devices and biologicals through registration, listing and compliance. Its distinctive move is section 36, which provides for “Manufacturing principles” — the Act does not write GMP into statute but empowers a determination to name the standard that manufacturers must meet. Standards for therapeutic goods generally are determined under section 10; medical devices have their own structure in the Essential principles at section 41CA and medical device standards at section 41CB.
By reference, and that is the whole architecture. A determination made under the Act adopts a named edition of the PIC/S Guide as the Manufacturing Principles, so the binding text is an external document identified by version — which is why this page states an edition rather than a name. Non-compliance is not treated as a paperwork matter: the Act attaches both criminal offences and civil penalties, at sections 14 and 14A and at sections 35 and 35A. The TGA has been a PIC/S Participating Authority since November 1995, in the founding cohort of the Scheme.