How do you fix the error?

When using the Build Fact Data and Cube Command, the initial load fails with the following message in the log: Error: System.ArgumentException: Item has already been added. Key in dictionary: ‘[location].[location].[level1_che_zznostateprovince_geneva]’ Key being added: ‘[location].[location].[level1_che_zznostateprovince_geneva]’ at System.Collections.SortedList.Add(Object key, Object value) at System.Collections.SortedList.SyncSortedList.Add(Object key, Object value) at Hrml.DataObjects.HrmlOrgCubeDimensionTree.AddTreeNode(String path, String parentPath, Int32 depth, String caption) in.

How do you fix the error?
A . Ensure
B. Convert all
C. Exclude
D. Make sure

Answer: D