To manage feed safety risks, the list of materials whose placing on the market for animal nutrition purposes is prohibited, as currently provided for in Commission Decision 2004/217/EC ( 16 ),) , together with a list of materials whose placing on the market for animal nutrition purposes is restricted, should be included in an Annex to this Regulation. The existence of such an Annex should not, however, be interpreted to mean that all products not listed can, as such, be considered safe.