You must include:

(a) The name of the employee(s);

(b) The signature of the proper authorizing official;

(c) Purpose of travel;

(d) Any conditions of or limitations on that authorization;

(e) An estimate of the travel costs (for open authorizations it should include an estimate of the travel costs over the period covered); and

(f) A statement that the employee(s) is (are) authorized to travel.