How can an existing web map in ArcGIS Enterprise be updated?

The method of updating an existing web map in ArcGIS Enterprise involves editing it directly within the portal or uploading a new version of the layer. This is an efficient approach because ArcGIS Enterprise is designed to facilitate seamless interaction with web maps. Users can make direct adjustments to maps—such as changing layers, modifying symbology, or altering data sources—through the web interface.

Additionally, if there are updates to the layers used in the web map, users can upload a newer version of those layers, ensuring that the web map reflects the most current data. This capability allows for easy maintenance and ensures that users can adapt their maps to meet changing requirements without the need to start from scratch.

Other methods like deleting and creating a new web map would be impractical, as they would result in loss of custom configurations, user interactions, and possibly shared settings. Exporting and importing again may not retain certain settings and configurations. Contacting a system administrator would not be necessary for standard updates, as users typically have the permissions to edit their content directly. Thus, directly editing or uploading new versions stands out as the most effective and straightforward method for updating existing web maps.