We are a transport company, tranporting containers from customer A to B. We have setup a product "transport container", with a product type "service". We usually invoice once a week (grouped invoice)

When we create a new sales order, the state of the SO is immediately set to "Sales to Invoices". We can not properly distinguish between - container already delivered but not invoiced yet - container not yet delivered (and not invoiced yet). Cause the state of the SO is in both situations "Sales to Invoice"

Please can you advise how to handle this? - add custom boolean field (e.g. delivered?) - add button and modify workflow? (preferred solution will be using OE as SAAS) - other options?