For any type of customs declaration in the European Union, a single model called DAU (Single Administrative Document) is used, which is printed on chemical paper and consists of several sheets that are filled in according to the type of customs operation to be carried out.

For operators acting in a Domiciled Procedure with electronic signature, there is the possibility of exporting in a fully computerized environment (ECS system). In this case the document issued is called AED (Export Accompanying Document).