I have a feature service that has one polyline feature class and two non-spatial tables. The problem I met is that the applyedits (add/update/delete) operations fail randomly. it gives me "Unable to complete operation" error msg. I mean sometimes it works but sometimes it fails.
For example, I want to delete a record whose ObjectID is 8408 like the screenshot below. First time I clicked "Apply Edits", it gave me the error msg, but when I kept clicking the Apply Edits button, it succeeded the third time or fourth time. It depends. The same situation happens for my adds operation.
The data comes from directly company arcgis database. I tried to register the tables as versioned or not, but it didn't solve the problem.
Anyone has any idea about the inconsistently applyedit failures? I am very willing to provide more details about my data.