The items in a stabilized approach (
FSF definition) provide guidance for operators and can be to adapted for specific operations. Thus, unless regulators require a stabilized approach to be flown within specific constraints, there is no ‘law’ specifying the details.
The principles of a stabilized approach require that a safe flight path be defined and that the defined path be established before some minimum altitude.
For a precision approach (ILS) there are existing conventions which define safe boundaries for the flight path, e.g. 1 dot deviation. PAPI/VASI deviations would correspond with these.
As above, 4 whites on the PAPI would not be within the boundary of the required flight path.
For a non-precision approach (those having higher risk) the flight path should ideally be a continuous descent based on prevailing conditions. The flight path can be defined with airspeed and the vertical rate. Safety boundaries should be specified for each of these, e.g. +/- 5 kts, +/- 200 ft/min.
In some tailwind conditions at high approach speeds, it might be possible to expect a VS of 800 ft/min, thus a limit at 1000 ft/min would just satisfy the stabilized approach criteria; but I would be very cautious of operating in such situations.