Do staff members successful in the YPP examination compete against all other successful YPP candidates for the same positions, or are there particular positions reserved for internal candidates?

Hiring Managers review profiles of all eligible successful candidates both internal and external to the UN and choose the most suitable based on merit. Whilst staff members who pass the YPP examination will fill up to 10% of all the YPP positions available, there are no specific posts earmarked for candidates moving from the GS and related categories to the P category.