The spatial relationships are defined in the spatial weights matrix file (.swm), which was created using a coordinate system different than the input features or the output coordinate system.
The relationships in the Spatial weights matrix files are based on the output coordinate system settings used when the .swm file was created. Relationships in the Network spatial weights matrix files are based on the spatial reference of the input network dataset.
No action is required, unless the spatial reference of the spatial weights matrix is inappropriate for the study area being analyzed. If so, consider recreating the spatial weights matrix file with an appropriate spatial reference.