The review period and any extension must be checked against the SIS record.
Record the entry date, the underlying decision and the scheduled review period. Under Article 39 of Regulation (EU) 2018/1861, a further storage review normally takes place within three years of entry in the SIS. If the national decision underlying the alert is valid for more than three years, the alert is reviewed within five years. These are SIS review points, not an automatic extension.
Ask the competent authority whether an individual extension decision was made and request its basis. The decision must be documented and the continued storage must be necessary and proportionate for the purpose of the alert.