[GIS] Assigning feature symbology by categories with related table in ArcGIS Online

Question

I am making maps for Collector app with features and related tables.

Is there a simple way to assign different symbol to features based on whether it has related records or not?

Answer 1

Currently symbolizing features with through related record values is not possible. This has been posted on the ArcGIS Ideas page if you want to vote for this feature. https://geonet.esri.com/ideas/10702