I am trying to publish a feature service with a polygon layer using ArcPro and am getting an error when analyzing: 00134 Layer's data source is not supported (Feature Service). The map document contains a single polygon feature class that I want to publish as a feature service. According to the Esri documentation this error occurs when sharing a Map image layer. I have been using ArcPro for about 7 years and I have no idea what this is. I am guessing that the real reason for the error is because the geodatabase isn't registered. When attempting to register the gdb, however, the Manage Registered Data Stores' pane only displays: "Date stores cannot be registered to ArcGIS Online". Not sure what I am missing, It's been a while since I published a feature service, but I don't remember it being this difficult.
