The Statutory Framework makes provision for a periodic review every 10 years.
Reports are prepared by the concerned authority, and forwarded to the UNESCO Secretariat. The reports are examined according to a set procedure. In the event that a site designated as a biosphere reserve does not satisfy the criteria, after a reasonable period of time the area will no longer be referred to as a biosphere reserve of the World Network.
To date, this procedure has never reached this conclusion: however several counties have voluntarily withdrawn "non-functional" sites and this has been commended by the MAB International Coordination Council.