ORA-31407: end_date must be greater than

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ORA-31407: end_date must be greater than the begin_date
Cause: The end data of thechange set is earlier than the begin date. The end date
must always be later in time than the begin date, so that the duration betweenthe
begin and end dates is a positive amount of time.
Action: Change the begin dateand/or the end date, so that the end date is later
than the begin date.