A person who is aggrieved by a tax decision made by the Commission General may object the decision by filling notice of objection in a prescribed form ITX 389.01. E Notice of Objection to the Commissioner General within 30 days from the date of service of the tax decision.A person who is aggrieved by a tax decision made by the Commission General may object the decision by filling notice of objection in a prescribed form ITX 389.01. E Notice of Objection to the Commissioner General within 30 days from the date of service of the tax decision.