Currently how your client arriving 100 Tons has been supplied to so and so customer with timelines--Any custom report??
Once after arriving the final customers list--are they follow credit memo request process or they will reduce on the next consignment ordered by customer--Pl take the clarity from client...
On both these cases--we need to have a separate freight condition type on the procedures of Credit memo request or SO process with all other proper controls...
Hope this helps..
Phanikumar