Source and target identical

A lane or flow has the same location as its source and its target. A connection from a location to itself moves nothing, so Create Scenario does not save the scenario, and Network Optimization and Cost to Serve stop on such a scenario.

What to do

Correct the source or target on the rows the message names, or remove those rows.

Where it comes from

Shown by Center of Gravity, Consolidate Shipments, Cost to Serve, Create Scenario, Network Optimization, XYZ Segmentation. It is one of the messages about the scenario.