Get descriptions automatically via combobox "Description Field"

[MathiasBoedecker]

[EDIT: Originally submitted for ArcMap, but still applicable in ArcGIS Pro. Removed ArcMap from the idea's title. If you are interested in seeing this functionality in ArcGIS Pro, please continue to add your kudos to this idea.]

ArcMap should provide the possibility to get descriptions for legend items from an attribute table automatically. This should be realize by using a separate "description field" combo-box (see figure) in the symbology dialog. With the combobox a user can choose one attribute field for item descriptions. There is a 1:1 relationship between value field and description field in an attribute table. Therefore every legend item gets its own description for map legend visualization. The description field combo box should be optional.

It should be a simple function which reduce copy/paste errors. Furthermore it helps to restore descriptions very fast after using the "Unique values", "Unique Values, many fields" or "Match to symbols in a style" function within a correction loop.

[iribaar]

This would be very helpful! Both in Pro and ArcMap.

[IBorg]

This would be a great feature. I work with large geological datasets, which are labelled usually for display with names like "LTrJGH", not very human-readable. They always have names and descriptions in associated fields though. It would be great to be able to auto populate the legend description field, rather than doing it by hand.

[CaitlinJ]

Having to enter descriptions manually is not an acceptable solution when working with more than just a few unique values. Please add this functionality.