Due to getting a rendering error when trying to publish from ArcMap, I'm trying to set up a custom symbology expression in Portal. When I create my expression however, it seems as though Portal is omitting most of the data. The data set has almost 13,000 records but when I do the custom symbology expression, that number goes down to less than 3,000. The expression is below. We use ArcGIS Desktop 10.5.1 and Portal for ArcGIS 10.5.1.
On another note, is the rendering issue going to be fixed in future versions? It would be nice to be able to publish with a 'unique values, many fields' symbology.