What are the Allowed Tables used for, and why does there appear to be duplicate data in the fields named "Code" and "ID" (at least in the AllowedSilviculture table, and I suspect others) . .. Is "Code" meant for an Alpha and "ID" used for a Numeric identifier?? Is there any advantage to using one over the other when importing Field Data??
Yes. But log grades are defined in the Grades table not an "Allowed" table. The same is true for many other tables such as: Species