Duplicates in the Job History table (JobHistory): this data situation leads to a violation of the PrimaryKey constraint on HistoryJob in the History Database (HDB), assuming that the following statement returns entries:
select * from JobHistory
where UID_Job in (select UID_Job from JobHistory group by UID_Job having count(*) > 1)
order by uid_Job
This is a product defect (25695).
This will be fixed in a future release of the product. If you require this immediately corrected, please contact Support for a hotfix referencing the defect ID 25695.