the rules and procedures for issuing, maintaining, amending, limiting, suspending or revoking the certificates referred to in point (b) of Article 30(1), and for the situations in which such certificates are to be required;
na rialacha agus na nósanna imeachta chun na deimhnithe dá dtagraítear i bpointe (b) d'Airteagal 30(1) a eisiúint, a choinneáil ar bun, a leasú, a theorannú, a chur ar fionraí nó a chúlghairm, agus na cásanna ina bhfuil gá leis na deimhnithe sin;