This is not an issue - it is by design: by default, you cannot close a WorkPeriod that contains Open Tickets.
You can try flagging the Ticket as Pre-Order using the Action Change Ticket Properties to bypass this behavior.
This is not an issue - it is by design: by default, you cannot close a WorkPeriod that contains Open Tickets.
You can try flagging the Ticket as Pre-Order using the Action Change Ticket Properties to bypass this behavior.