I have demo which was working perfect. But somehow it give error :-
(A Document Being Saved By Testappiclound)"), it didn't return 0, and errno was set to 20.
Please help me how to solve this error
If errno is 20, that means ENOTDIR, "not a directory". It's impossible to give a better answer unless you describe what you were doing at the time. The usual error reporting mechanism on iOS is NSError, which is returned from many, many methods and typically provides details of what specifically went wrong. Using errno is not necessarily wrong but is much less likely to give useful information.