For this purpose the national authorities of the Schengen States, acting through their departments responsible for external frontiers controls and through liaison officers, in so far as bilateral agreements on the secondment of officials make provision for such duties, are to collect all information on specific problems arising at external frontiers which suggest a dysfunctioning at frontier control level.
Če dvostranski dogovori o napotitvi uslužbencev predvidevajo izvajanje navedenih dolžnosti, morajo nacionalne oblasti schengenskih držav, ki delujejo prek svojih mejnih kontrolnih služb in prek uradnikov za zvezo, zbirati vse informacije o konkretnih problemih na zunanjih mejah, ki kažejo na pomanjkljivosti, do katerih prihaja pri mejni kontroli.