I'm attempting to upload a few small, pretty straightforward layers to ArcGIS Online, with the intent of creating a Feature Layer View of each one. These views will have some of their attributes hidden, then be added to my organization's Open Data Portal. The problem is, the Create View Layer process keeps failing with the extremely unhelpful message, "Error: Unable to add feature service definition", as seen in the attachment.
This is a workflow I've used many times before without issue, and indeed, it's only happening for two of the three layers in the current batch. The third one worked exactly as expected, and is currently in the Open Data Portal.
Further complicating things, my attempts to do an end-run around the issue are also meeting with failure. I made a copy of the data with the attributes we want to hide removed, uploaded the layers, and the copied layers just simply don't appear in the Open Data Portal regardless of sharing settings. These aren't complicated datasets - they have several hundred features at most, with 6-12 attributes, mainly short text fields.
Has anyone run into problems like these before? Did you find any solutions?