Outstanding Qty VS Back order Qty

Hi experts,

what is difference between Outstanding Qty VS Back order Qty in the report ID 708 , Inventory order details.

Could any expert share their experience about this.

thanks and regards

Back Order Qty is either equal to Outstanding Qty or 0.

In case shipment date is prior to WORKDATE then is the first case otherwise it is 0.

IF “Shipment Date” < WORKDATE THEN
BackOrderQty := “Outstanding Quantity”
ELSE
BackOrderQty := 0;

Thank you .