For product feed synchronization, we have a few params to be added in order to decide what products to query.
- on_stock, default on (off/on) -> include only products on stock.
- image_size, default home_default (other sizes available on your shop settings)
- available_for_order, default on (off/on) -> include only products available for order
- combinations, default on (off/on) -> display combinations in the list
- cat_cond, default on (off/on) -> only choose products from active categories
You will need to add those values to your feed URL section in Setup -> Feed, if the values you are looking for are different from our defaults.
For example if the feed URL is: https://example.com/feed.php you will end up having it like: https://example.com/feed.php?on_stock=off&combinations=on