Hi,

In Odoo POS, the loyalty program lets customers both earn and redeem points within the same order because the earning rules apply to all eligible order lines, while rewards only give discounts or free products without disabling the earning mechanism. This means that even if a customer redeems points for a discount, the system will still calculate and grant new points on the transaction total. Odoo does not provide a built-in setting to stop this behavior. If your business rule is that redeeming points should prevent earning new points, the standard configuration cannot achieve it. Workarounds like splitting programs into “earn only” and “redeem only” are impractical for daily operations. The reliable solution is a small technical customization: extend the POS loyalty calculation (e.g., in _get_loyalty_points) to check whether any points were spent on the order and, if so, set the earned points to zero. This ensures that customers cannot both redeem and earn points in the same order, keeping the loyalty program consistent with the intended policy.

For more information, refer to the following links:

* https://www.cybrosys.com/blog/how-to-manage-loyalty-programs-in-odoo-17-pos

* https://www.odoo.com/documentation/18.0/applications/sales/point_of_sale/pricing/loyalty.html

* https://www.youtube.com/watch?v=cBh_hZjkPIU

* https://www.odoo.com/es/slides/slide/loyalty-programs-4524

Hope it helps