Setting the Customer Group of the Customer produces the CustomerGroupSet Message.
To reflect the new Customer Group, this update action can result in [updates](/api/carts-orders-overview#update-a-cart) to the most recently modified active Cart. When this occurs, the following errors can be returned: [MatchingPriceNotFound](ctp:api:type:MatchingPriceNotFoundError) and [MissingTaxRateForCountry](ctp:api:type:MissingTaxRateForCountryError).
Setting the Customer Group of the Customer produces the CustomerGroupSet Message.