We have a set of simple products that are visible in two separate configurable products.
I have set the Maximum Qty Allowed in Shopping Cart to 1, so customers should only be able to order one of each SKU. But it appears they can order two, one from each configurable.
Is there a way to stop this so the customer can only order one simple product, regardless of how many configurables it sits under?
Please go to that simple product edit section and expand the advance inventory option.
Then set "Maximum Qty Allowed in Shopping Cart" is 1.
Your issue gets resolved.
If my answer is helpful full then please set the accept solution flag and kudos flag so other members can take the same reference.
All the simple products have that field set to one already.
But they are able to order two, one from each configurable product, even though the simple product is the same and the max qty is set to 1.