Travelers who depart on travel without a travel authorization must submit the following information to the Comptroller or Deputy Comptroller in order to have the travel authorization and a follow-on travel voucher approved:
A description of the circumstances, including the reason the
traveler departed without orders.
A request to have the travel approved.
An acknowledgement that it should have been approved in
advance and assurance that this will not recur. (4) The AO’s approval.