insert
31A Rejection of certain requests for subpoena
If a party asks for the issue of a subpoena under rule 31 (1), the subpoena must not be issued without the court's leave if it appears to the registrar that the subpoena—
(a) is not substantially complete; or
(b) does not substantially comply in form with these rules.
Note The registrar may also refuse to accept a subpoena for filing under o 66 r 10B (Refusal to accept documents—abuse of process etc).