On the basis of the criteria laid down in the Treaty and the Statute, the Ombudsman determines whether a complaint is within his mandate and if so, whether it is admissible; he may request the complainant to provide further information or documents before making the determination.
Ar bhonn na gcritéar atá leagtha síos sa Chonradh agus sa Reacht, déanann an tOmbudsman cinneadh i dtaobh an dtagann gearán faoi réim a shainordaithe agus, má thagann, an bhfuil sé inghlactha; féadfaidh sé a iarraidh ar an ngearánach tuilleadh faisnéise nó doiciméad a sholáthar sula ndéanann sé an bhreith.