With the continuing push to automate supply chain (e.g. Coles, WW, EDG, ALM etc.) via EDI and more modern integration methods it is becoming more important for us to be able to attach multiple file types to a Sales Order for physical printing.
Currently we can do one Invoice via API and everything else needs to be attached manually (and all of them say they are an Invoice type). Ideally we would be able to upload multiple documents to an SO: Invoice, Delivery Docket, SSCC Labels, Export paperwork (bill of lading, customs declaration etc.) that the warehouse can then print.