Can Production Plan have finished goods in Select Items to Manufacture section

Hi all, I am trying a create a Production Plan by Getting the Items from Sales Order, by clicking Get Sales Orders button the sales orders are fetched and by clicking Select Items to Manufacture, the child is populated with finished goods which does not have BOM No but is a mandatory field. Now, when I try to save it, I get the Keyerror: ‘’

Is there some way to save the production plan without having a BOM No?