Diagnosis
The hierarchy contains multiple root nodes.

System Response
Because hierarchies can only be displayed with one root node in thehierarchy simulation, the system only displays the first root node withits subtree. However, the correctness check is only carried out for thewhole hierarchy.

Procedure
If errors occur in the parts of the hierarchy that are not displayed,use the preview dialog, in which the system displays the wholehierarchy in a list, to analyze the error. If you cannot see the errorin this way, individually load the root nodes with their subtrees sothat you can analyze errors in the individual subtrees.