At Google, free listings can only run through one CSS per Shop. At the same time, a shop can work with any number of CSS providers. This raises the question: Which CSS are the free listings displayed through?
What happens when you change CSS? #
In some cases, free listings are removed from the current CSS. Only Merchant Centers located in Google’s CSS (GSE) have the option of assigning free listings to different CSSs. For this reason, you need a special Merchant Center at Google Shopping Europe to make the setting if free listings are lost. Since this Merchant Center has no other purpose and is not used for displaying ads, we call it “Control MC.”
Why this is relevant? #
Without the correct configuration, free listings can be lost. However, with a Control Merchant Center, they can be controlled in a targeted manner.
