A defect in the form of any direction, order, instruction, approval, authorization, consent, application, request, notice, certificate, report or other document which has been issued or furnished in terms of this Act or a scheme shall not render invalid any administrative proceedings to which such direction, order, instruction, approval, authorization, consent, application, request, notice, certificate, report or other document relates, and shall not be a ground for exception in any legal proceedings, provided the requirements for such direction, order, instruction, approval, authorization, consent, application, request, notice, certificate, report or other document have been substantially complied with and the meaning thereof is intelligible.