In Field Maps Designer, unique symbols are discarded in the feature Templates tab.

Workaround

• Publish the service from ArcGIS Pro 3.1 and enable the 'Use symbol types compatible with all clients' check box to convert the ArcGIS Pro symbols to web symbols.

• After setting the symbology to Unique Symbols, open the web map in ArcGIS Online Map Viewer Classic. On the Edit tab, notice the unique templates for each symbol listed for the layer. Click Manage and click Save Changes. This pushes the changes to the hosted feature service level to update the available templates. In Field Maps Designer, the templates are now available.

Steps to Reproduce