两个流程很类似，都要创建PR和PO给供应商，主要区别在于谁来发货。
B2B是我们从供应商那拿货，然后收到货后，再运送给客户；
Dropship表示销售是从我们这里发出，但是是由供应商直接给客户发货，我们分别和客户，供应商开应收，应付发票。(关于Dropship的流程，可以参见我的另外一篇文章:Dropship的流程
Difference between back to back and drop shipment flow in Order management
Conceptual Difference:Back to back flow - A business scenario where the material is specially purchased for a particular sales order and the material needs to be received into one of the warehouses of the selling group of companies, is referred as "Back to back" cycle. Back to back Purchase order is hard linked to the sales order until it is received. Please note highlighted words here. Since, the material is received into the warehouse, the sales order needs to follow additional picking/packing/shipping process only after which the goods are sent to the customer.
Drop Shipment flow - A business scenario where the material is specially purchased for a particular sales order and the material is directly sent from the supplier to the customer, is referred as "Drop Shipment" cycle. Drop shipment purchase order is also hard linked to the sales order until is received. However, in this case the material is never received in the internal warehouse. Also, no additional picking/packing/shipping is involved by the selling company. Hence, when such purchase order is received it is directly shipped without any physical shipping process.
Technical different in Oracle
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Phase
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Back to back
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Drop shipment
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Sales order line source
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Sales order line ORDER SOURCE should be internal
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Sales order line ORDER SOURCE should be External
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Import purchase requisitions
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Back to back requisition data is immediately pumped into requisition interface table after PROGRESS ORDER action in sales order
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Drop Ship requisition data is NOT immediately pumped into requisition interface table after PROGRESS ORDER action in sales order. Workflow background process needs to be run to insert data into requisition interface tables
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Reservations
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Back to back purchase requisition is reserved to the sales order in MTL_RESERVATIONS table. Same process is following by oracle for all sales order reservations.
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Drop ship requisition is reserved to the sales order in special table called OE_DROP_SHIP_SOURCES. This is a unique process followed only for drop shipment
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Purchase orders
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It does not have “Drop Ship” tab in the PO Shipments form
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It has “Drop Ship” tab in the PO Shipments form
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Purchase order delivery location
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Deliver To location in purchase order shipment is set to the internal warehouse address
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Deliver to location in purchase order shipment is set to “Customer Ship To address”
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Sales order line status
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Line status changes on Progress Order, Requisition Creation, Purchase Order Approval & Purchase order receipts
e.g. Requisition Requested, Requisition Open, PO Open
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Line status does NOT change on Progress Order and Purchase Order Approval.
E.g. Awaiting Receipts – only status until PO is received
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Viewing PO reservations
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Available in sales order line-Actions>Reservation details screen
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Available in Sales order line->Actions->Additional Line information
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PO receipt
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Physical receipt of the material happens
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Only logical receipt of the material
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Flow of purchased material
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Material is received inside the warehouse and then shipped
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Material is never received in the warehouse, it is shipped directly from supplier to the customer
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After receipt
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Stock of the goods received increases, stock gets reserved to the sales order automatically
Sales order status changes to “Awaiting Shipping”
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Stock is received and immediately shipped out by the system. Sales order status changes directly to “Shipped”
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Sales order delivery lines/delivery
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Delivery lines are created in shipping when PO is received
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No delivery lines are created, since shipping process in the system is skipped
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