Remaining amount of PO item to be invoiced based off of pending invoices and not approved.
A PO item for value of 100 is invoiced for a value of 50 in the system. The remaining amount to be invoiced for that PO item is still 100. Once the invoice is approved, then the remaining amount to be invoiced for that PO item now 50.
Request to make the remaining amount to be invoiced for an item be calculated using pending or approved invoices linked, not just approved.