1. Enable the Required Inventory Features

To start, go to Inventory > Configuration > Settings and activate:

• Storage Locations
• Multi-Step Routes
• Dropshipping

These features provide the foundation needed to manage different fulfillment flows.

2. Activate and Configure the MTO Route

Next, go to Inventory > Configuration > Routes.

• Filter to show archived routes, then unarchive Replenish on Order (MTO).

• Open the route and adjust the rule to:
  Supply Method: "Take from Stock, if unavailable, Trigger Another Rule"

This ensures the system will trigger a purchase or production order when stock isn't available.

3. Allow Route Selection at the Sales Order Level

Still in the Routes configuration, find both the Dropshipping and MTO routes.

• Enable the Sales Order Lines option on each route.
  This makes them selectable for individual product lines in a Sales Order.

4. Use Routes Per Line in a Sales Order

When creating a Sales Quotation or Sales Order, you’ll now see a Route field on each product line.

• Select Dropship for lines that should be shipped directly from the vendor.
• Select MTO for lines that should trigger a purchase or production order based on demand.

This means you can mix and match fulfillment methods—even for the same product—within the same order.

5. Automatic Fulfillment Based on Selected Routes

Once the order is confirmed, Odoo automatically generates the necessary backend documents based on the chosen route per line:

• Dropship lines will trigger Purchase Orders linked to Vendor Deliveries.
• MTO lines will generate Purchase Orders or Manufacturing Orders depending on your product settings.

For example, products P00003 and P00005 can be sent to the same customer or vendor—but one is dropshipped, and the other is fulfilled via MTO—seamlessly within one Sales Order.

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