Describe the Transaction Set Flow for a Retail Business?

Step 1-Pre-Ordering
               
                Request for quotation                                   840
                Response to request for quotation          843
Step 2-Ordering
                Purchase Order                                                850
                Acknowledge Purchase Order                    855
                Change Purchase Order                                                860
                Acknowledge Change Purchase Order   865
Step 3-Physical Distribution
                Notify Shipment                                               856
Step 4-Billing-Self-Billing/Payments
                Process Invoice                                                 810
                Process Invoice (Credit / Debit)                812
                Show Payment Status                                    820