inventory backorder,

1) I have created  Sales order (14003093 / SO /01750) of “48” Qty and Order date: 13/08/2014, at that time “16” Quantities were available in –stock for item number  in B/P in specific location.

2)  When R42520 was run on date 14/08/2014,  at that time out of “48” Quantities “16” were committed and rest “32” were backorder due to which extra line with line number 1.001 having  last status =  “539” and next status =  “902”  was created  in Sales Order detail.

3)  Confirm Shipment was performed on Date: 20/08/2014, at the time and date there were “16” Qty in stock but it is tricky how it has gone for backorder for all “16” Quantities and hence no item ledger (P4111) record updated.