Those Member States have developed integrated electronic systems at national level for the proper functioning of such codes, linked to national databases.
Tá córais leictreonacha comhtháite forbartha ag na Ballstáit sin ar an leibhéal náisiúnta le haghaidh fheidhmiú chuí na gcód sin, ar cóid iad atá nasctha le bunachair sonraí náisiúnta.