N.M. Code R. § 7.31.2.19
The State WIC Office may conduct one or more on-site monitoring visits during an agreement period in order to verify vendor compliance with program requirements. Such visits may be unannounced, and may occur at any time during vendor business hours. Independently or in conjunction with such on-site visits, the State WIC Office may also audit a vendor's records to verify compliance with program requirements. Upon request, a vendor shall produce copies of any and all documents necessary to this audit within 30 days. The State WIC Office may implement any other monitoring procedure to verify vendor compliance with program requirements as is deemed appropriate under the circumstances. The vendor shall comply and cooperate with all such monitoring procedures.
N.M. Code R. § 7.31.2.19