SAD
Germany….
https://www.export.gov/article?id=Germany-Import-Requirements-and-Documentation
The Single Administrative Document
The official model for written declarations to customs is the Single Administrative Document (SAD). The SAD describes goods and their movement around the world and is essential for trade outside the EU, or of non-EU goods. Goods brought into the EU customs territory are, from the time of their entry, subject to customs supervision until customs formalities are completed. Goods are covered by a Summary Declaration which is filed once the items have been presented to customs officials. The customs authorities may, however, allow a period for filing the Declaration which cannot be extended beyond the first working day following the day on which the goods are presented to customs.