Hi
Just to finish this post.
In fact I created a new sales order type with no action. Not relevant for delivery, not relevant for invoicing.
Manage all the stuff of new items, copy rules with quotation document type...
Then I go in VA01 and create this new document ZQUO in copy of the quotation.
Like this the quotation is validated (according to SAP), so the service order is released.
Then I can process it as a normal service order and use in DP90 to do my invoicing process based on actual costs.
This means the creation of a not relevant at all document, but it really feet my need.
Regards.
