Ms Hilary Murphy-Fagan:

All 31 systems are currently in place because each of the Departments and offices currently carries out finance accounting on those systems.

When our system goes live at the end of the year, we will start to bring tranches of Departments onto our system in groups or clusters. When their systems cut over to ours - we convert and transfer their data onto ours - and we start to provide the services, the systems that exist today will effectively be retired. They may be retained for a short period to access historical data, but effectively they will no longer be used.