In order to enable the lawful cross-border exchange of evidence and information by means of the Union-wide application of the ‘once-only’ principle, the application of this Regulation and of the ‘once-only’ principle should comply with all applicable data protection rules, including the principle of data minimisation, accuracy, storage limitation, integrity and confidentiality, necessity, proportionality and purpose limitation.
Ionas go mbeifear in ann malartú trasteorann dlíthiúil a dhéanamh ar fhianaise agus ar fhaisnéis trí chur i bhfeidhm an phrionsabail “aon-uaire” ar fud an Aontais, ba cheart do chur i bhfeidhm an Rialacháin seo agus do chur i bhfeidhm an phrionsabail “aon-uaire” gach riail cosanta sonraí is infheidhme a chomhlíonadh, lena n-áirítear prionsabal an íoslaghdaithe sonraí, cruinneas, teorannú stórála, iontaofacht agus rúndacht, riachtanas, comhréireacht agus teorannú de réir cuspóra.