Error: System.ArgumentException: Item has already been added. Key in dictionary: '[location].[location].[level1_che_zznostateprovince_geneva]' Key being added:

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?

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