To ensure reimbursement for official travel, an approved travel authorization form is required. This assures reimbursement within the limits of the city travel policy. Lack of pre-approval does not prohibit reimbursement. All costs associated with the travel should be reasonably estimated and shown on the travel authorization form. An approved authorization form is needed before advanced expenses are paid or travel advances are authorized. A copy of the conference program, if applicable, should be attached to the form. If the program is not available prior to the travel, submit it with the reimbursement form.