In addition to the standard template, various shipping templates can be set up within the Amazon Seller Central via SETTINGS - SHIPPING SETTINGS, which include the countries and address types to which an item can be shipped, how much shipping costs and whether there are surcharges, as well as the various shipping methods, such as 1-day and 2-day premium shipping.
In order for these templates to be synchronized for the different items, they must first be created in Seller Central.
If different shipping templates are set in Amazon, this can be done via the MerchantShippingGroupName attribute. It must be ensured that the spelling is the same as in Amazon and that the Delivery Costs attribute is not transferred.