Take a close look at those errors if they are only occurring for some records. You should get a dump of the current input line and the values of variables read. Examine that input line for INVALID dates such as 30 Feburary, 2/30/yyyy, or 29 Feb in a non-leapyear or 31 days in any month that only has 30. Or perchance extreme values for a year such as 20013. You may also have some data sent to you as dd/mm/yyyy. Post some of the log showing the error.
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