Reasons for a sales order to get backordered

Reasons for a sales order to get Backordered

Back Orders:

The Oracle "term" backorder is a "status" on the order line or delivery line indicating that you have tried to release an order for picking in your warehouse, but that the pick release was UNSUCCESSFUL because there was no available inventory.(Backorder can be partial or complete). The Oracle term backorder does NOT mean that you have open purchase orders for the out-of-stock item from your vendors.

The term backorder is also used in business a little differently than in Oracle. The term "An item is on backorder" usually means that the item is not in stock, but the shipping company has already placed purchase orders from their suppliers to restock the item.

Back Order is when you do not fulfill the Sales Order, or if the inventory is out of stock for delivery to customer.

  
Backorder oracle apps order management(OM)
Reasons for a Sales Order to get Backordered!

A Sales Order can get into backorder state after performing Pick Release on a Sales Order but there are many reasons for a Sales Order to get backorder. Today I will list the possible reasons for a Sales Order to get backorder.
  1.     Order on Hold
  2.     Inventory Period NOT open
  3.     No enough on-hand quantity
  4.     No enough quantity to reserve/transact
  5.     No on-hand quantity in required sub-inventory
  6.     The Lot from which items are selected is inactive/expired
  7.     Lot control Item Lot Divisible Option not enabled
  8.     Specified Lot is Disallowed Transaction (Applied on Material Status)
  9.     Item On-Hand to Disallowed Transaction (Applied on Material Status)
  10.     Wrong Item reservation (even inventory have enough quantity)
  11.     Inventory reserved for other sales orders
  12.     Inventory picked-up by other sales orders
  13.     Previously done return to stock not properly performed
  14.     Cycle Count Adjustments
  15.     Serial Control Item Serial number not allocated or not assigned 
  16.     Manually Backordered 
  17.     Move order is in pending state 

NOTE: This is not the end of the list, there will be many reasons for a sales order to get backorder. I will keep this list updated as and when I come across some more new reasons.

 If you are aware of any more other reasons where sales order is getting  backordered, there please comment and help others who are facing same issue.