We are using the Vendor Portal for drop ship orders - we want to share shipment tracking numbers/ URLs with our customers. So we want the vendor to enter tracking information and have it pass thru into the sales order. It would be a process after PO confirmation and before invoice, to note shipped and tracking information attached. I can see this info also being valuable to regular purchase orders as well. We then want to use this data to send automatic emails to customer (delivery address contact) to let them know the item has shipped and here's the tracking info (think Amazon like process).