You need to delete an existing Book In
Find the Production Order you need to delete the Book In for, select [Pending] OR [Complete] under [Book In] column
Select [Book In] tab to view all active Book Ins
Locate the Book In you wish to remove, and deselect [Active]
Book In has been removed
Units marked as received are now listed as Pending
If you will not be receiving the returned units back you will need to Force Close the order, click here for further details