Diagnosis
The selection of the InfoObjects to be removed is not consistent:
The following possibilities, therefore, come into question:
You have highlighted an InfoObject of type Unit, however,unhighlighted InfoObjects still exist in the communication structure,that require this InfoObject as a unit or currency key. This InfoObjectmsut not be removed!
or
An as yet unhighlighted InfoObject of type Unit exists, that isonly used as a unit or currency key by the InfoObjects you selected.This InfoObject will also be removed.

System Response
The corresponding InfoObject will not be removed or additionallyremoved.