22/09/2026
Try adding one of your own out-of-stock products to your cart. If it goes in, the rule you switched on is not running.
A store kept selling products it did not have. The setting that prevents that was on, and had been the whole time.
The products were not being tracked for inventory. On most platforms that one switch makes the out-of-stock rule meaningless. If nothing counts the stock, nothing can decide it has run out, so the rule is never consulted at all.
Two settings, both apparently correct, that only work when they agree. Nobody is told when they disagree.
The cost lands on the customer who buys something that never ships, and on whoever answers the phone afterwards.