4455 Back order, coded [B] Desc: Code to identify the back order agreement. Repr: an..3 B Back order only if new item (book industry - not yet published only) Item on back order due to unpublished status. F Factory ship Ship directly from factory to purchaser. N No back order Back order is unacceptable. W Warehouse ship Ship directly from warehouse. Y Back order if out of stock Acceptable to put on back order if out of stock. ZZZ Mutually defined Self explanatory.