Member States may set up decentralised databases on condition that these, and the administrative procedures for recording and accessing data, are designed to be homogeneous throughout the territory of the Member State and are compatible with one another in order to allow for cross-checks.
Féadfaidh na Ballstáit bunachair shonraí dhíláraithe a bhunú ar choinníoll go ndeartar na bunachair shonraí sin, mar aon leis na nósanna imeachta maidir le sonraí a thaifeadadh agus rochtain a fháil orthu, ar bhonn aonchineálach ar fud chríoch an Bhallstáit agus ar choinníoll go bhfuil siad ag luí lena chéile ionas gur féidir cros-seiceálacha a dhéanamh.