I have an Activity Dialog that I would like to update the ticket Owner to whomever is completing the dialog. The Required Lock property seems to do exactly what I want. However, if I open the dialog and before completing it click "Undo & close window" I get an Insufficient Rights error: Message: We are sorry, you do not have permissions anymore to access this ticket in its current state. At this point I am the ticket owner with full rw permissions on the queue in which the ticket resides. And I can go back to the zoom view for the ticket and complete other dialogs, so the permissions issue seems to be localized to just this "undo" action. I thought it might have something to do with the Permission property of the Activity Dialog but none of the various settings I've tried have made any difference. There is also no indication in the System Log what might be causing the error. CentOS 6.x OTRS 4.0.13 Appreciate any assistance. +Eric