The High Contracting Parties undertake to make all efforts in order to make action among all Member States possible in the domains of the Schengen acquis, in particular whenever Ireland and the United Kingdom of Great Britain and Northern Ireland have accepted some or all of the provisions of that acquis in accordance with Article 4 of the Protocol integrating the Schengen acquis into the framework of the European Union.
Gabhann na hArdpháirtithe Conarthacha orthu féin gach iarracht a dhéanamh chun go mbeidh gníomhaíocht indéanta idir na Ballstáit uile i réimsí acquis Schengen, go háirithe nuair a bheidh Éire agus Ríocht Aontaithe na Breataine Móire agus Thuaisceart Éireann tar éis glacadh, i gcomhréir le hAirteagal 4 den Phrótacal ag lánpháirtiú acquis Schengen i gcreat an Aontais Eorpaigh, le forálacha uile an acquis sin nó le roinnt díobh.