(36) Ba cheart gurb é an áit a bhfuil a riarachán lárnach san Aontas ag rialaitheoir príomhbhunaíocht an rialaitheora san Aontas, murar i mbunaíocht eile de chuid an rialaitheora san Aontas a ghlactar na cinntí maidir le críocha agus modhanna phróiseáil na sonraí pearsanta, agus sa chás sin ba cheart an bhunaíocht eile sin a mheas mar an phríomhbhunaíocht. Ba cheart príomhbhunaíocht de chuid rialaitheora san Aontas a chinneadh de réir critéir oibiachtúla agus, tríd an gcinneadh sin, ba cheart a thabhairt le tuiscint gur inti a dhéantar feidhmiú éifeachtach agus iarbhír na ngníomhaíochtaí bainistíochta lena ndéantar na príomhchinntí maidir le críocha agus modhanna na próiseála trí shocruithe cobhsaí. Níor cheart don chritéar sin a bheith ag brath ar cibé an ndéantar an phróiseáil ar shonraí pearsanta ag an áit sin. Má tá modhanna teicniúla agus teicneolaíochtaí ann agus in úsáid chun sonraí pearsanta a phróiseáil nó chun gníomhaíochtaí próiseála a dhéanamh, ní hionann sin is a rá gur príomhbhunaíocht an áit sin agus, dá bhrí sin, ní critéir chinntitheacha iad sin maidir le príomhbhunaíocht. Ba cheart an áit ina bhfuil a riarachán lárnach san Aontas príomhbhunaíocht an phróiseálaí nó, mura bhfuil aon riarachán lárnach aige san Aontas, ba cheart gurbh í an áit ina ndéantar na príomhghníomhaíochtaí próiseála san Aontas. I gcásanna a bhaineann leis an rialaitheoir agus leis an bpróiseálaí araon, ba cheart gurb é an príomhúdarás inniúil maoirseachta i gcónaí údarás maoirseachta an Bhallstáit ina bhfuil a phríomhbhunaíocht ag an rialaitheoir, ach ba cheart údarás maoirseachta an phróiseálaí a mheas mar údarás maoirseachta lena mbaineann agus ba cheart don údarás maoirseachta sin a bheith rannpháirteach sa nós imeachta comhair dá bhforáiltear sa Rialachán seo. In aon chás, níor cheart údaráis mhaoirseachta an Bhallstáit nó na mBallstát ina bhfuil bunaíocht amháin nó níos mó ag an bpróiseálaí a mheas mar na húdaráis mhaoirseachta lena mbaineann. I gcás inar leis an rialaitheoir amháin a bhaineann an dréachtchinneadh. I gcás ina ndéanann grúpa gnóthas an phróiseáil, ba cheart príomhbhunaíocht an ghnóthais rialaithigh a mheas mar phríomhbhunaíocht an ghrúpa gnóthas, seachas i gcás ina gcinneann gnóthas eile na críocha agus na modhanna próiseála.
(36) The main establishment of a controller in the Union should be the place of its central administration in the Union, unless the decisions on the purposes and means of the processing of personal data are taken in another establishment of the controller in the Union, in which case that other establishment should be considered to be the main establishment. The main establishment of a controller in the Union should be determined according to objective criteria and should imply the effective and real exercise of management activities determining the main decisions as to the purposes and means of processing through stable arrangements. That criterion should not depend on whether the processing of personal data is carried out at that location. The presence and use of technical means and technologies for processing personal data or processing activities do not, in themselves, constitute a main establishment and are therefore not determining criteria for a main establishment. The main establishment of the processor should be the place of its central administration in the Union or, if it has no central administration in the Union, the place where the main processing activities take place in the Union. In cases involving both the controller and the processor, the competent lead supervisory authority should remain the supervisory authority of the Member State where the controller has its main establishment, but the supervisory authority of the processor should be considered to be a supervisory authority concerned and that supervisory authority should participate in the cooperation procedure provided for by this Regulation. In any case, the supervisory authorities of the Member State or Member States where the processor has one or more establishments should not be considered to be supervisory authorities concerned where the draft decision concerns only the controller. Where the processing is carried out by a group of undertakings, the main establishment of the controlling undertaking should be considered to be the main establishment of the group of undertakings, except where the purposes and means of processing are determined by another undertaking.
(124) I gcás ina ndéantar sonraí pearsanta a phróiseáil i gcomhthéacs gníomhaíochtaí bunaíochta de chuid rialaitheora nó próiseálaithe san Aontas agus i gcás ina bhfuil an rialaitheoir nó an próiseálaí bunaithe i mBallstát amháin nó níos mó, nó i gcás ina ndéanann an phróiseáil a dhéantar i gcomhthéacs gníomhaíochtaí bunaíocht aonair de chuid rialaitheora nó próiseálaithe difear suntasach do na hábhair sonraí i níos mó ná Ballstát amháin, nó ar dócha go ndéanfaidh sé difear suntasach dóibh, is é an t-údarás maoirseachta do phríomhbhunaíocht an rialaitheora nó an phróiseálaí nó do bhunaíocht aonair an rialaitheora nó an phróiseálaí ar cheart dó gníomhú mar phríomhúdarás. Ba cheart dó comhoibriú leis na húdaráis eile lena mbaineann, toisc go bhfuil bunaíocht ag an rialaitheoir nó ag an bpróiseálaí ar chríoch a mBallstáit, toisc go ndéantar difear suntasach do na hábhair sonraí a bhfuil cónaí orthu ar a gcríoch, nó toisc gur taisceadh gearán leo. Chomh maith leis sin, i gcás ina bhfuil gearán taiscthe ag ábhar sonraí nach bhfuil cónaí air nó uirthi sa Bhallstát sin, ba cheart an t-údarás maoirseachta, a bhfuil an gearán sin taiscthe leis, a bheith ina údarás maoirseachta lena mbaineann freisin. Mar chuid dá chúraimí treoirlínte a eisiúint maidir le haon cheist lena gcumhdaítear cur i bhfeidhm an Rialacháin seo, ba cheart an Bord a bheith in ann treoirlínte a eisiúint, go háirithe maidir leis na critéir a bheidh le cur san áireamh d'fhonn a fháil amach an ndéanann an phróiseáil atá i gceist difear suntasach d'ábhair sonraí i níos mó ná Ballstát amháin agus faoina bhfuil i gceist le hagóid ábhartha réasúnaithe.
(124) Where the processing of personal data takes place in the context of the activities of an establishment of a controller or a processor in the Union and the controller or processor is established in more than one Member State, or where processing taking place in the context of the activities of a single establishment of a controller or processor in the Union substantially affects or is likely to substantially affect data subjects in more than one Member State, the supervisory authority for the main establishment of the controller or processor or for the single establishment of the controller or processor should act as lead authority. It should cooperate with the other authorities concerned, because the controller or processor has an establishment on the territory of their Member State, because data subjects residing on their territory are substantially affected, or because a complaint has been lodged with them. Also where a data subject not residing in that Member State has lodged a complaint, the supervisory authority with which such complaint has been lodged should also be a supervisory authority concerned. Within its tasks to issue guidelines on any question covering the application of this Regulation, the Board should be able to issue guidelines in particular on the criteria to be taken into account in order to ascertain whether the processing in question substantially affects data subjects in more than one Member State and on what constitutes a relevant and reasoned objection.
(125) Ba cheart don phríomhúdarás a bheith inniúil ar chinntí ceangailteacha a ghlacadh maidir le bearta lena gcuirtear i bhfeidhm na cumhachtaí a thugtar dó i gcomhréir leis an Rialachán seo. Ina cháil mar phríomhúdarás, ba cheart don údarás maoirseachta dlúthpháirt a thabhairt do na húdaráis mhaoirseachta lena mbaineann agus iad a chomhordú go dlúth sa phróiseas cinnteoireachta. I gcás ina gcinntítear diúltú do ghearán an ábhair sonraí, go hiomlán nó go páirteach, ba cheart don údarás maoirseachta ar taisceadh an gearán leis an cinneadh sin a ghlacadh.
(125) The lead authority should be competent to adopt binding decisions regarding measures applying the powers conferred on it in accordance with this Regulation. In its capacity as lead authority, the supervisory authority should closely involve and coordinate the supervisory authorities concerned in the decision-making process. Where the decision is to reject the complaint by the data subject in whole or in part, that decision should be adopted by the supervisory authority with which the complaint has been lodged.
