Filtering the search by an SKU specification will also apply a filter by SKU availability, removing products where the selected variation is stockout, but it doesn't consider the specific trade policy.

Browsing different trade policies may show products where the filtered variation is unavailable because the indexed availability for an SKU specification is based on all trade policies (any available).

Simulation

Considering a store with two trade policies and the following availability matrix for a specific product:

• size: small; trade policy 1: available; trade policy 2: unavailable
• size: large; trade policy 1: unavailable; trade policy 2: unavailable

In a navigation on trade policy 2, filtering by "size: small" will return the product (as it were available) and "size: large" will hide the product (because it's unavailable everywhere).

Workaround

N/A