No objection by the accused to the validity of the citation against him, on the ground of any discrepancy between the record copy of the indictment and the copy served on him, or on account of any error or deficiency in such service copy or in the notice of citation, shall be competent F2except by leave of the court on cause shown, unless his intention to raise the objection is stated in a notice under section 76(1)(a) of this Act, and no such discrepancy, error or deficiency shall entitle the accused to object to plead to such indictment unless the F3court shall be satisfied that the same tended substantially to mislead and prejudice the accused.