I am trying to determine if this is a bug with Field Maps, We are currently running ArcGIS Enterprise 11.2.
I get the following error when trying to delete a feature in Field Maps. After clearing the message the feature does seem to still delete and is no longer shown in the data.
The error happens when I have the same layer in my web map multiple times each being named/filtered/symbolized differently, but coming from the same feature service. For example I have one layer in the web map called Water Device - Valves symbolized and filtered to only show valve features this is also the layer that has a smart form and has editing enabled in the web map. I then have a second layer in the map called Water Device, and this is sourced from the same layer/service above, but editing is disabled on the layer in the web map. If I enable editing on the second layer the error message no longer occurs when deleting a feature in Field Maps.
The error only happens when deleting a feature in Field Maps, no errors when deleting a feature within the Map Viewer or a Instant App/Experience Builder App.
The Feature Service is a series of layers from a Utility Network enterprise geodatabase registered on the data store. It is published without the UN Network layer included. All editing rights are enabled.