Non-mentioning or wrong mentioning of a provision of law (in the petition or order) does not invalidate an order, in the event it is found that the Court has the power to do so.
It is settled law that once it is found that the power exists, the exercise of power under a wrong provision will not render the order illegal or invalid.
Non-mentioning or wrong mentioning of a statutory provision under which power was exercised and order was passed, would not vitiate the order for which there was a source under general law or a statute.