Warning Message :
Order has been totally processed, there is no quantity to create a Back Order.
The order which you want to create as back order is already processed which means all the items are either allocated, picked, packed or shipped
If all the items within that order is Shipped, Back Order creation is not possible.
If it is not shipped, this error message states that there is enough inventory to fulfill this order. If the inventory is missing physically within the warehouse, you can cancel the missing items on Warehouse Task Processing screen.
1- Go to Task Processing screen : WMS> Operations > Task Processing
2- Search with Shipment Order Number and Task status is Entered
3- Select the Tasks you want to delete and use the button 'Cancel and Delete Tasks'
4- Then you can go back to Order Operations page and create a back order