Flow rows repeated

Several flow rows from Map Transport share the same source, target, product, transport mode, date and reference. This is a warning: the scenario is saved with them, but maps and graphs show one flow per connection by adding them up, and Network Optimization adds them up too, whatever period they cover.

What to do

If the rows are individual shipments, add an Aggregate node before Map Transport that groups by those columns and sums the quantity over the period the scenario should cover. If adding them up is what you want, you can leave the warning.

Where it comes from

Shown by Create Scenario. It is one of the messages about the scenario.