I have task flows that are "successful" but still contain an error log. As the flow itself is successful I don't get an error notification.
I couldn't say for sure but also have the feeling that there seems to be a threshold for single tasks. E.g. tasks are treated as successful if only xxx records fail.
This is dangerous. As I only want to get notified if tasks or task flows fail and since I am not logging in every day to check I might miss something.
It would be nice if there were an option to mail error logs. If there is an error log, mail extract to me. If not, be quiet.