I created a planned production order and changed status to Firmed Planned Production order with no issue. I think i tried to test manual item reservation on the Firmed Planned Prod Order. When I tried to Refresh the Firmed Planned Prod Order, an error msg came out...
So I went to the the order = Actions = Functions = Reserve to cancel the reservation.
However, I still get the same error msg when I tried to Refresh the order. Any idea what can I do to rectify the error?