State export data: origin of movement vs. origin of production

The Origin of Movement (OM) series is unique data documenting the destination of state ex- ports. This data indicates the state an export begins its journey, not the production location (OP). Recent OM data has not been examined to determine if it represents OP. Here the collection, dissemination, and limitations of the OM data are described. Diagnostic tests asses how eectively the OM data represents OP. Results indicate the OM data are usable for OP, though there are idiosyncratic subsectors and states, and systematic dierences distinguishing the OM from OP.