Why can't I select some UOM classes using Quick Setup?

In the Quick Setup flow, you can't select Unit of Measure (UOM) classes that already exist in your Oracle Fusion instance. Existing UOM classes are disabled to avoid data being overwritten.

If the UOM class data already exists in your Oracle Fusion instance, then you can't perform setup on this existing data using Quick Setup. The flow also checks whether any of the units already exist in another class. If so, the UOM class in Quick Setup is disabled to prevent you from selecting a class that would result in overwriting existing units.

If no units exist in the Oracle Fusion instance, then you can select the UOM classes in the second train stop of the Quick Setup flow.