I have Google Merchant Center connected to Shopify, but with the need of multiple feed label, I have a very long and unique product id for the product in GMC (“feed name”“product id”“variant id”. But in Google, it requires you to contain the {id} of the product in order to have the “buy now” button. and i cannot have the same product id as it would show error in GMC.
and for Shopify, it requires variant id and the quantity. making it impossible to have a add to cart link. I want to have the “buy now” button, but as i add something like variant id_US:1, it would not work. is there a way to work around it?