shipping sales

shipping sales Shipping shipping shipping prenumber怎么翻译?在这句话中：Prenumber and account for shipping documents and sales invoices. sales sales sales Example of transaction are shipping a sales order or receipt of a shipment for a purchase order.这里的shipping和shipment是指? sap中 sales order的shipping和schedule line有什么差别?怎么进行availabilty check的? drop shipping free shipping return shipping ground-shipping shipping mark domestic shipping shipping forwarder shipping marks