Cocoa error 262, Can't upload file to iCloud

Cocoa error 262, Can't upload file to iCloud

I am trying to use following lines of code to upload a large file to iCloud:
-(void)uploadFileWithFilePath:(NSString *)Path toFileURLInCloud:(NSURL
*)destURL{
NSURL * filePath = [NSURL URLWithString:Path];
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT,
0), ^(void)
{
NSFileCoordinator* fileCoordinator = [[NSFileCoordinator alloc]
initWithFilePresenter:nil];
[fileCoordinator coordinateReadingItemAtURL:filePath
options:NSFileCoordinatorReadingWithoutChanges
error:nil
byAccessor:^(NSURL *newURL)
{
NSFileManager * fileManager = [[NSFileManager alloc] init];
NSError * error;
BOOL success = [fileManager copyItemAtURL:filePath
toURL:destURL error:&error];
if (success) {
NSLog(@"Copied %@ to %@", filePath, destURL);
}
else {
NSLog(@"Failed to copy %@ to %@: %@", filePath, destURL,
error.localizedDescription);
}
}];
});
}
I get this error
The operation couldn't be completed. (Cocoa error 262.)
What could be the problem here?