90(1)Where there has been substantial compliance with the requirements of this Part no adoption order shall be set aside on appeal or otherwise by reason only of a defect or irregularity in complying with the requirements unless there has been a substantial miscarriage of justice.

90(2)Except on appeal, an adoption order shall not be set aside unless the order was procured by fraud, and unless it is in the best interests of the child to set aside the order.