In order to answer your question, could you give me more specific commodity and trade flow.  In general, with the introduction of our new processing system, certain quantities may be estimated by applying Standard Unit Values (SUV). Thus, it will appear that different reporters have similar unit values

I am wondering what the difference is between the net weight and the supplementary quantity. Is the net weight the primary unit declared by the member countries and is the supplementary quantity the secondary unit?  For example when I check the following trade flow I get this result: 1 Period Trade Flow Reporter ...