Presumption of customs status of Union goods

1.   All goods in the customs territory of the Union shall be presumed to have the customs status of Union goods, unless it is established that they are not Union goods.
2.   In specific cases, where the presumption laid down in paragraph 1 does not apply, the customs status of Union goods shall need to be proven.
3.   In specific cases, goods wholly obtained in the customs territory of the Union do not have the customs status of Union goods if they are obtained from goods in temporary storage or placed under the external transit procedure, a storage procedure, the temporary admission procedure or the inward processing procedure.