An error that is returned when the network is not available.
UIKit for Mac 13.0+Beta
Network failure errors can be retried immediately, but your app should implement a backoff timer so that it doesn't attempt the same operation repeatedly.
If the network is unavailable, your app should start monitoring for network reachability and wait to reissue the operation until the network is available again. See CFNetworkErrors for more information about these errors.
An error indicating that the specified record zone does not exist on the server.
This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.