In ArcGIS Online, attribute table fields are not updated if pop-ups are enabled.
Last Published: January 11, 2016ArcGIS Online
Bug ID Number
October 8, 2015
August 21, 2020
After review by the development team, it has been determined that this issue is related to a known limitation with the software that lies outside of Esri's control. The issue's Additional Information section may contain further explanation.
The field alias remains when users save a pop-up in the web map that uses the original field alias. Since users can change the field alias when creating a pop-up, ArcGIS Online is designed to not change an alias that is saved on the pop-up automatically.
Remove the pop-up before saving the map. When the saved web map is opened and pop-ups are added back, the alias is updated.
1. In the ArcGIS Online web map viewer, click the Configure Pop-up button and change the field name.2. Disable and re-enable the pop-up.