Diagnosis
You want to create architectural object &V2& [&V3&]. Forthis object type, number assignment is set up so that numbers areassigned based on object type &V1&.
In the hierarchy of this architectural object type, however, there isalready an object with this number: &V2& [&V4&].

System Response
The system does not accept the number of the object.

Procedure
Choose a different object number.