Ordered Items to be Delivered

We are a trading company that doesn’t manage stock. Stocks come to the port of delivery and get sent directly to the customer.

Now I usually raise a sales order, and from that multiple delivery notes (partial), till the delivery is completed and closed. My issue is that in the Ordered Items to be Delivered, the delivered quantity is not currently being updated. Any particular reason why, could you help me identify the source of the issue?

But the Qty and the Qty to Deliver is showing correctly, while the delivered quantity is showing 0

Could you check if your item is marked as “Stock” or “Non-Stock” item in “Item Master”?

Also, could you check if you have enabled “Drop Ship” functionality?