PO EDIT -Split Requested delivery date for open quantity

Summary:

We are edit po change order with multiple lines and face two issues:

1.      Buyer unable to see open quantity for each schedule line or receiving quantity.

(no option to add those fields via page composer).

2.      When splitting line quantity buyer need to fit line and schedule quantities manually and system allow entering over /lower quantity.

more over the validation done only on submit.

Since buyer edit po line by line he is not able to monitor his mistakes and see it only once he submits the PO.

is it possible to have the validation on saving?

Any option to see the see open quantity at schedule level – so it will be more efficient to update only the open Qty.