Answer:
The polyline displayed in Figure 01 has been created in the order of Nodes 1 → 2 → 3 → 4 → 5. This is also visible in Column B "Node No." of Table "1.2 Lines". Thus, the line segments between Nodes 3, 4 and Nodes 4, 5 are overlapping, so that the error message shown in Image 02 appears.
The order of the nodes must be changed in a way so that no line segments overlap each other. In this example, it would be the order of Nodes 1 → 2 → 3 → 5 → 4, as shown in Image 03.
You can also use the "Explode Polyline" function to decompose the polyline (Image 04). Thus, two lines are created between Node 5 and Node 4. Then, you can delete the line. For this, it is also possible to use the "Regenerate Model" function in the "Tools" menu.
Both procedures are shown in the video.
