I am testing out a feature service for use in web editing, primarily through Collector. I am testing in ArcGIS Online. I tried to edit an existing feature and there are a couple of fields that have a yellow triangle and with an exclamation point next to them and a popup that states that this value is required. I cannot seem to figure out how this property is set. The two fields in one particular feature that are marked as required aren't really required and other fields that should be required are not required. How do I change the property of this? In the feature class it seems the only thing you could change is whether or not a field is nullable but that doesn't appear to affect anything else. The template doesn't have an option for requiring fields either. ArcGIS Online nor Collector have any options that I can find to alter this either. The service properties don't reference required fields either.