the rules and procedures for issuing, maintaining, amending, limiting, suspending or revoking the certificates referred to in point (b) of Article 42(1), and for the situations in which such certificates are to be required;
na rialacha agus na nósanna imeacht chun na deimhnithe dá dtagraítear i bpointe (b) d'Airteagal 42(1) a eisiúint, a choinneáil ar bun, a leasú, a theorannú, a chur ar fionraí nó a chúlghairm, agus maidir leis na cásanna ina gceanglaítear na deimhnithe sin;