N.C. Gen. Stat. § 66-255
A specialty market operator or operator of an event where space is provided to a vendor must maintain a daily registration list of all specialty market or other vendors selling or offering goods for sale at the specialty market or other event. The registration list must clearly and legibly show each vendor's name, permanent address, and certificate of registration number. The specialty market operator or other event operator must require each vendor to exhibit a valid certificate of registration for visual inspection by the specialty market operator or other event operator at the time of registration, and must require each vendor to keep the certificate of registration conspicuously and prominently displayed, so as to be visible for inspection by patrons of the vendor at the places or locations at which the goods are offered for sale. Each daily registration list maintained pursuant to this section must be retained by the specialty market operator or other event operator for no less than two years and must at any time be made available upon request to any law enforcement officer or the Secretary of Revenue or the Secretary's duly authorized agent. For purposes of the registration list, the exemptions in G.S. 66-256 do not apply.
N.C. Gen. Stat. § 66-255