Within the Revit Plug-In, you will be able to synchronize type data between dRofus Items and Revit Family Types as well as carry out a validation of the occurrence of Family Types in Revit Rooms / Spaces vs that of Items in dRofus Rooms. To carry out the former, you must have your Family Types in Revit linked up with the corresponding Items in dRofus. These Family Types in Revit must have a one to one relationship with Items in dRofus. To carry out the latter you must in addition have your Rooms / Spaces in Revit linked up with the corresponding Rooms in dRofus. Again, these Rooms / Spaces in Revit must have a one to one relationship with Rooms in dRofus. This chapter specifically describes the handling of Family Types / Items, as well as Family Types / Items in Revit / dRofus Rooms, but the same will also apply for Revit Spaces.