When the Treaties confer on the Union a competence shared with the Member States in a specific area, the Member States shall exercise their competence to the extent that the Union has not exercised, or has decided to cease exercising, its competence.
Nuair a dhéanann na Conarthaí inniúlacht arna roinnt leis na Ballstáit i réimse áirithe a thabhairt don Aontas, feidhmeoidh na Ballstáit a n-inniúlachta mhéid nach bhfuil an tAontas tar éis a inniúlachta fheidhmiú, nó gur chinn an tAontas scor dá feidhmiú.