We're running Enterprise 10.8.1 and I've been attempting to get web hooks to work. On ArcGIS Online they work fine on hosted feature services but on our local portal under supported operations it's not even an option. If I append /WebHooks?f=json to the end of the feature service admin url I do get a json response which tells me there is something there.
Any thoughts on why I can't create one through the web browser?
Thanks