If there is no cost to COSA, there is no requirement for a Travel Authorization form. (21) "Travel expense" means a meal, lodging, transportation, or incidental expense.Find per diem rates for San Antonio, Texas to manage travel expenses. Travel and Expense Reimbursement Guidelines. All meeting travels MUST BE deemed essential and mission-critical in order for the approval to be granted. If the traveler is in a travel status other than local travel, and purchases a meal for other University employees, the expense is reimbursable as a business. The government defines travel expenses as "ordinary and necessary" parts of leaving your home for business purposes. This concur expense software, is probably the worst app I've even worked with, in the past 5-10 years, if not forever. Find per diem rates for San Antonio, Texas to manage travel expenses. Take on your out-of-town business trips.