I am currently struggling with finding the spatial reference data in the metadata -- so the .DEM data shows the spatial reference all right, but the .sph does not -- any particular reasons for that?
I am using Pro, the layout for the metadata is the same and I defined a projection (WGS84), so it's present in the properties. I am not sure if and how to manually insert the spatial reference - I thought it's done automatically by ArcGIS when defining the projection?
Changing the theme doesn't change anything either, unfortunately, tried all of them. It seems to be with the shapefile I think. It didn't have a coordinate system before and I defined the projection. I thought it would automatically be implemented in the metadata then but it doesn't seem to be the case?