Now that you have assigned at least one Merchant Center to each keyword, you need to make sure that these Merchant Centers only contain the products that are to be displayed via the keyword.
To do this, you may need to split the product feeds and assign them to the Merchant Centers.
EXAMPLE
You previously had one Merchant Center with products from the shoes and bags categories. Now you have two keyword CSSs for “shoes” and “bags.” Since shoes are your more important category, you have added your previous Merchant Center to the shoes keyword CSS and set up a new Merchant Center in the bags keyword CSS.
Now you need to split the product feed to ensure that only products from the shoes category are in the “shoes MC” and only products from the bags category are in the “bags MC.”
Then everything is set up perfectly and the shoes will be displayed via the shoes keyword and the bags via the bags keyword.
