While using the Collector app on iPad/Android phone I get an error message that reads "Update Failed The update could not be sent". I have add, edit, and delete enabled and sync is enabled but grey (cannot be toggled off). I am not an administrator. The feature service is hosted on ArcGIS Online. Has anyone else had this issue, and what is causing it?
We have found the cause of the problem. Make sure your data does not contain m- or z-values (not m- or z-aware). How To: Remove Z- and/or M-values from a feature class. AGOL maps can work with them, but collector cannot.