Oracle Error Message
ORA-34001: (MODCOMP14) Concat leaf dimension workspace object already is used in a DIMENSION statement, either explicitly or as a leaf of another concat dimension.
Reason for the Error
Either two concat dimensions which share a common leaf dimension, or a concat and one of its leaves where both specified in the DIMENSION statement(s).
Solution
Do not specify overlapping concat dimensions, or any leaves of specified concat dimensions.