Services that have their Invoicing Policy defined as Based on Delivered Quantity (Manual) can be manually delivered by updating the Delivered field on the Sales Order Line.

Hi,

The delivery status in Odoo is typically tied to the delivery orders (shipping) generated for shippable products. Since services don't involve physical shipments.

Refer to the code:

from odoo import models

class SaleOrder(models.Model):

    _inherit = 'sale.order'

    def _compute_delivery_status(self):

        super()._compute_delivery_status()

        for order in self:

            # If order ONLY contains services → mark as delivered

            if all(line.product_id.type == 'service' for line in order.order_line):

                order.delivery_status = 'delivered'

Hope it helps.

V18 changed how "Based on Delivered Quantity (Manual)" works for services compared to V17, and it's tripped up a lot of people.

In V18, for service products with that invoicing policy, you now need to **manually update the Delivered qty directly on the Sales Order line** — the old shortcut of clicking the delivered counter from the Field Service task no longer pushes to the SO automatically in all configurations.

Here's the confirmed flow in V18:

1. Complete the field service task and mark it as Done

2. Go to the linked **Sales Order → Order Lines tab**

3. Click the pencil icon on the service line → update the **"Delivered"** column manually to match actual hours/qty

4. Then go to **Sales Order → Create Invoice** — it should now work cleanly

If you want the delivered qty to update automatically from timesheets (without manual entry), switch the invoicing policy from "Manual" to **"Based on Timesheets"** — this pulls directly from timesheet entries logged on the task and is more reliable for field service workflows.

For a team doing 10+ jobs/day, manual delivery updates are a bottleneck. Happy to walk through the automated timesheet invoicing setup if you're open to it. 

*— I help service businesses automate their operations *