Google Merchant Center Additional Countries Settings Are Coming
https://www.seroundtable.comGoogle said by the end of this month you will need to control global product availability in your product feed. You can apply the shipping attribute to products directly in the feed or specify countries by using the “additional countries” feature. This applies to both Shopping ads and free listings, Google said.
Google is pre-selecting countries in your feed to configure as “additional countries” of sale starting the week of September 14, 2020. For most merchants, this doesn’t change the availability of your products across countries. Up until September 30, 2020, Google will use Merchant Center shipping settings to determine additional countries for your product data. After this time, further country selection changes can and will be configured on the feed or product level. Your product-level shipping attributes will continue to apply.
More info in their help documentation.