This error often points to missing or incorrect shipping details (like address or package weight) required by Starshipit. Double-check your delivery settings and ensure all mandatory fields are populated.

The issue ended up being at the Starshipit end.

I was able to discern through logs that Odoo was reaching the Starshipit API successfully and getting a response, but the Rates array was always empty, which Odoo interprets as the order not being valid for any courier service.

There's some configuration not exposed in the UI that prevented Odoo from hitting our Courier's API directly. Once this was changed, the issue went away.

We're in the US and having the same issue. No help so far.

Hi,

Refer to the following.

* https://www.youtube.com/watch?v=T8FvPNi-kYo

* https://www.odoo.com/documentation/18.0/applications/inventory_and_mrp/inventory/shipping_receiving/setup_configuration/starshipit_shipping.html

Hope it helps