Diagnosis
You selected orders, functional locations, WBS elements, or cost centersas object types to be selected, but you did not select any object typesof Flexible Real Estate Management.

System Response
In the case of orders, functional locations (more precisely: themaintenance orders assigned to them), WBS elements, and cost centers,selection is made using the real estate objects to which these objectsare assigned. That means that the system first determines the selectedreal estate objects and then the objects assigned to them.
However, you did not select any real estate objects. Therefore thesystem is unable to select the assigned objects.
.

Procedure
Select at least one real estate object type.