I am working with a scenario where we issue Sales Order with all the Items to be delivered. However when we invoice, we invoice the customer according the contract - 3 invoices in total (40%, 30%, 30%) according the milestone fulfilment. The problem here is:
- Sales Order includes all the items that will be delivered - however those items are components of software system and are not corresponding invoice (in other words, when we issue first invoice, non of those items are delivered as this is even before we start to work)
- If I remove all the items in the invoice linked to Sales Order and replace with e.g. item “Service deliver as per agreement”, the link to SO is immediately lost, which is unwanted.
Is there any standard way how to invoice milestones and still keep the link to SO?