Steps to reproduce the bug: On a new db, just launch: ./odoo-bin --addons-path=../enterprise,./addons --test-enable -d s11 -i l10n_be,account_accountant,stock,sale_management,purchase An error occured in test_02_check_mto_chain due to the supplier taxes set on the product. opw:1878341 closes odoo/odoo#27069