030185: Your network data source is 3D, but it has an unknown Z coordinate system. Points will be located on the network as if the network were in a 2D plane, ignoring the network's Z coordinates.

Description

The network data source is 3D with an unknown z-coordinate system. The z-coordinates for the network will be ignored, and the points will be located on the network as in a 2D plane.

Solution

If this is not the expected behavior, determine the proper z-coordinate system of the network data, set it accordingly, and rebuild the network dataset.