I have checked the iteminfo file and the item number is correct. I did create a joined view of the data two days ago, but deleted both of those layers. When I go into AGOL and open the feature service, attempt to add a field on the backend, the add field option is missing. I have attached the log file when I sync and it says schema changes not allowed. There are over a 1500 consequential records in this feature service, so need to come up with a solution that maintains the data.
