Functionality is available to adjust the UOM visibility setting within your System Template columns. This is beneficial when you use an RFQ for logistical purposes, in which you don't use all of the data and don't want the visibility of certain data to your suppliers.
This functionality can be controlled in the settings for “Viewable by Supplier” under the Supplier Rule in RFQ only section. You will then be able to adjust the visibility only for the UOM column in the supplier portal. This field is not editable at the supplier portal.