The issuing Member State shall ensure that the alert takes effect in SIS as soon as the third-country national concerned has left the territory of the Member States or as soon as possible where the issuing Member State has obtained clear indications that the third-country national has left the territory of the Member States, in order to prevent the re-entry of that third-country national.
A luaithe a fhágfaidh an náisiúnach tríú tír críoch na mBallstát nó a luaithe is féidir i gcás ina bhfaighidh an Ballstát a d'eisigh an foláireamh comhartha soiléir gur fhág an náisiúnach tríú tír críoch na mBallstát, áiritheoidh an Ballstát a d'eisigh an foláireamh go ngabhfaidh éifeacht leis an bhfoláireamh sin in SIS ionas gur féidir teacht isteach arís an náisiúnach tríú tír sin a chosc.