We're in the process of setting up your app. I understand that in order for our products to feed into Google's comparison engines, we need to set Item Group IDs, could you tell me where to add this property in Shopify?
Item Group Ids are required for apparel poducts with variants. Eg. Similar products but different in color, size, material etc… can have the same Item Group Id. This is however catered for with the Feedmanager. so no worries.
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