Where ERETES is implemented by a team of national accountants, the assistance
of a software expert is required. The duration and type of assistance required
would largely depend on the future users' level of experience of national accounts
(SNA 93 in particular).
Our experience of various situations on the ground show that on average seven
expert missions are required to provide assistance to a team of experienced
national accountants.
These seven missions coincide with the phases of compiling accounts using ERETES.