https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=16534 --- Comment #1 from Theodoros Theodoropoulos <theod@lib.auth.gr> --- Steps to reproduce: - Check out item X in patron A (item belonging to branch B1) - Go to circulation, select patron B (from branch B2!=B1) - Try to check-out the same item X to patron B - You get a warning (Please confirm checkout Item X is checked out to A. Check in and check out?). Click Yes - You get either the Duplicate entry error / or the duplicate entry in issues table [update] Newer tests indicate that the only requirement to get the error is: ITEM X must belong to a different branch than patron A/B (regardless of which branch patron A and patron B belong to). -- You are receiving this mail because: You are watching all bug changes. You are the assignee for the bug.