If these authorisations are not used, they shall expire at the latest by 31 December 2018, or, where a Member State has taken the decision referred to in the second subparagraph of paragraph 1, at the latest by 31 December 2023.
Mura mbaintear leas as na húdaruithe sin, rachaidh siad in éag faoin 31 Nollaig 2018 ar a dhéanaí, nó más rud é go mbeidh an cinneadh dá dtagraítear sa dara fomhír de mhír 1 glactha ag na Ballstáit faoin 31 Nollaig 2023 ar a dhéanai.