1. This Directive shall apply to the following obliged entities:
(3) the following natural or legal persons acting in the exercise of their professional activities:
(a) auditors, external accountants and tax advisors, and any other person that undertakes to provide, directly or by means of other persons to which that other person is related, material aid, assistance or advice on tax matters as principal business or professional activity;
(b) notaries and other independent legal professionals, where they participate, whether by acting on behalf of and for their client in any financial or real estate transaction, or by assisting in the planning or carrying out of transactions for their client concerning the:
(i) buying and selling of real property or business entities;
(ii) managing of client money, securities or other assets;
(iii) opening or management of bank, savings or securities accounts;
(iv) organisation of contributions necess
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