Hi,

In Odoo 19, you can't directly set up automatic discounts based on the total order amount through basic configurations. However, you can use pricelists with advanced rules, which involves creating a pricelist and using a Python formula to define discounts based on the order.amount_total. This method offers flexibility but requires some Python knowledge.

Alternatively, you can explore discount programs, though they might be more suited for complex scenarios. Manual discount application is also an option, where you manually apply discounts to orders, but this isn't automated. For advanced users, developing a custom module provides maximum control but requires Odoo development expertise. The pricelists with advanced rules approach is generally the best balance of flexibility and control.

Related module:

* https://apps.odoo.com/apps/modules/18.0/sale_discount_total

* https://apps.odoo.com/apps/modules/17.0/discount_limit

Hope it helps

Discount rules are always based on Products.

You can enable discounts and use the Discount button on the Sales Order for an order level discount

You might also look at Discount and Loyalty programs:

https://www.odoo.com/documentation/19.0/applications/sales/sales/products_prices/loyalty_discount.html