Hi experts,
I have a problem with a Sales Order.
1 line in the SO has the Line quantity like this:
Quantity: 1000
Invoiced: 1000
Delivered: 1000
Deliver remainder: 199
On order: 199
Because there is still Deliver remainder, the status of this line and the SO are not Invoiced although in fact they are.
The Packing slip journal also show the Remaining quantity = 199.

When I tried to perform "Deliver Remainder" -> "Cancel Quantity", this error showed out:

I also checked and found no open Production Order, Output Order or Picking List for this SO line.
The Inventory transaction has a total quantity of -1,199.00 and On order quantity is -199.00.
I want to remove the remaining quantity.
Appreciate if anyone who can help solve this issue.
Thanks.