I've got totally mixed up with the Irish system. I've thought that Postgraduate Diploma lies somewhere between Honours Bachelor Degree (Level 8) and Masters Degree (Level 9). I checked
NFQ website today, and realized that Postgraduate Diploma is listed actually under Level 9. So if both are on Level 9, what's really the difference between them? Can you, for instance, do a PhD programme (without transfer route) having Postgraduate Diploma, or do you have to have a Master Degree? If yes, again, what's the difference between these two degrees? If not, why are both listed under Level 9? I'd appreciated your responses.