Mich. Admin. Code R. 339.23401
Rule 401.
A state licensed or certified residential or certified general real estate appraiser shall not sign an appraisal report for a federally related transaction unless that licensee has performed the appraisal pursuant to USPAP and is properly licensed to perform the assignment. The material participation of any other individual in preparing the report must be acknowledged in the report as required by USPAP regardless of the licensure status of the other individual. The signature of a state-licensed, a certified residential, or a certified general appraiser as a supervisory or co-signing appraiser must not be used to mask the preparation of a report by an individual who is not authorized to sign the report.
Mich. Admin. Code R. 339.23401