I am experiencing this strange issue.
I have a Feature Layer associated with (published as) a Scene Layer.
I connect to my AGOL organization as the owner of these layers.
I published them automatically from ArcGIS Pro by sharing a web scene with a multipatch layer.
Now, I have to enable editing in my Feature Layer, but as I try to activate the option "Enable editing" (in the item detail -> Settings), and save, I always receive the error "Unable to save. Try again." (it's translated directly from Italian, the message in english could look a bit different).
I need this to use the layer inside Collector.
Any idea why this is happening?