Why are the hierarches greyed out?

Some dimension hierarchies in the Dimension Editor tool are greyed out, which prevents you from remapping codes located in the Unmapped node .

Why are the hierarches greyed out?
A . The code to build the hierarchy is invalid.
B. The hierarchy is a generated structure based on SQL statement.
C. The build of the hierarchy did NOT complete.
D. The checkbox to enable code mapping editing is NOT selected.

View Answer

Answer: B