The two copies of every contract, voucher, travel voucher, purchase order or other financial commitment required to be submitted to the department shall be signed by an authorized officer. The department will retain at least one signed copy of every contract, voucher, travel voucher, purchase order or other financial commitment. Alternatively, agencies may submit a single electronic version, in portable document format (PDF) or a comparable format and in such a manner as the department may direct, of an executed contract, voucher, travel voucher, purchase order or other financial commitment required to be submitted to the department.
N.M. Admin. Code § 2.20.2.9