An error indicating that the content of the specified asset file was modified while being saved.
- iOS 8.0+
- macOS 10.10+
- UIKit for Mac 13.0+Beta
- tvOS 9.0+
- watchOS 3.0+
- Xcode 8.0+
An asset on the record was modified before
CKModify could complete. Consider copying assets before handing them to CloudKit to upload, or perform synchronization inside of your app to prevent it from modifying assets until they have been successfully uploaded.