Purchase order flow and Sales order flow

Purchase order flow and Sales order flow:


Purchase order flow:
1.Purchase order creation
2.Confirmation
3.Receipt list
4.Product receipt or packing slip (Physical inventory)
5.Invoice (Financial)
classes:
PurchFormLetter
PurchFormLetter_confirmation
PurchFormLetter_receiptlist
PurchFormLetter_packingslip
PurchFormLetter_invoice

Sales order flow:
1.Sales order creation
2.Confirmation
3.Picking list , picking list registration
4.Packing slip (Physical inventory)
5.Invoice


classes:
SalesFormLetter
SalesFormLetter_confirmation
SalesFormLetter_pickinglist
SalesFormLetter_packingslip
SalesFormLetter_invoice