Hello,

Yes, You need to install the project_mrp module for this. When you confirm the sales order it will generate the picking (Delivery order) for stockable product. For service type product It will generate the task instead of the picking (If project_mrp) is installed.

Now regarding the invoice you have to select invoice policy "On demand " or any other , instead of only "based on delivery order". You can create invoice for both line.

Thank you!

I found the answer well:

the default I had in the field Create invoice was On Delivery Order, I changed by On Demand. Now invoice from the sales order and send products from Delivery Orders