I was playing around with a model scenario using the MRIO feature in version 3. Specifically, I wanted to run an impact scenario that contained an industry that didn't exist in my primary model but does exist in the linked model region. My hope was that I would be able to capture the stimulated demand for the product from the linked region, even though it is not available in the primary model region. What happened, however, is that I get an error stating "Failed to enable constraints. One or more rows contain values containing non-null, unique, or foreign key constraints." Clearly, IMPLAN is not able to run this model. Is there a way to edit the activities for this model to eliminate the industry as an event? Each time I reopen the model and click "Setup Activities" to delete the event, I get the above error. It's as if I've corrupted the model; is my only option to recreate this model?
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