The distinction between <50% & >50% repair painting is based on the prepared area not the initial repaired area. This is the area that requires heavy preparation and priming.
To Confirm, <50% gives heavy preparation and primer to up to 50% of the panel's outer surface whilst >50% gives heavy preparation and primer to up to 100% of the panel's outer surface.
Please note the system will generate labour and materials for edge to edge painting on metal and plastic panels regardless of which repair paint option is selected.
The AZT document can be accessed below.