Production Order

hi there,

as I refering to this http://help.sap.com/saphelp_sbo2007a/helpdata/en/44/f29326df7365fbe10000000a1553f7/content.htm

about the production order,

it stated there For the Special production order type, select the item from the items list., ask i choose special production order in B1, it still promp to to pick a bom item, if I had item which did not belong to any bom, which mean I cannot create the production order?