Final answer:
There are no specific groups of incoterms that are excluded in the EU. The EU's single market system diminishes the relevance of certain incoterms related to customs clearance.
Step-by-step explanation:
The question is regarding what groups of incoterms we don't have in the EU and why this might be the case. Incoterms, which stand for International Commercial Terms, are a set of rules published by the International Chamber of Commerce (ICC) used in international trade contracts to define responsibility and liability for the shipment of the goods. There are no specific groups of incoterms that are excluded from use within the EU. However, because the EU operates as a single market with free movement of goods, services, capital, and labor, certain incoterms that assign significant responsibility for customs clearance to the buyer may be less relevant within the EU, where such barriers are reduced.