1. The customs authorities shall determine the period within which goods placed under the temporary admission procedure must be re-exported or placed under a subsequent customs procedure. Such period must be long enough for the objective of authorised use to be achieved.
2. The maximum period during which goods may remain under the temporary admission procedure for the same purpose and under the responsibility of the same authorisation holder shall be 24 months, even where the procedure was discharged by placing the goods under another special procedure and subsequently placing them under the temporary admission procedure again.
3. Where, in exceptional circumstances, the authorised use cannot be achieved within the periods referred to in paragraphs 1 and 2, the customs authorities may, at the duly justified request of the authorisation holder, extend those periods for a reasonable duration.