[Koha-bugs] [Bug 16534] Error when checking out already checked out item

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=16534 --- Comment #4 from Theodoros Theodoropoulos <theod@lib.auth.gr> --- @Jonathan: Can you please run: SELECT itemnumber,COUNT(*) AS nb FROM issues GROUP BY itemnumber HAVING nb > 1; If you get any lines, then you DO have the problem. You simple don't get the error because you currently don't have the Unique Key constraint in the DB -- You are receiving this mail because: You are watching all bug changes. You are the assignee for the bug.