California Code, Business and Professions Code - BPC § 12713

(a) A weighmaster is responsible for ensuring that the weighmaster certificates issued by him or her, or a deputy acting for him or her, are complete and contain all the information required by Sections 12714, 12714.5, and 12715 that is applicable to each transaction.

(b) It is unlawful to issue, or cause to be issued, a weighmaster certificate if the certificate does not contain all the information required by Sections 12714, 12714.5, and 12715 for the commodity weighed, measured, or counted. The issuance of a receipt showing the weight, measure, or count of fish, mollusks, or crustaceans pursuant to Article 6 (commencing with Section 8010) of Chapter 1 of Part 3 of Division 6 of the Fish and Game Code constitutes the issuance of a weighmaster certificate under this chapter when issued by a person who is a weighmaster pursuant to Section 12700.