Bus. & Prof. Code, § 23391

If a violation of any provision of this division or of any rule of the department is committed in the exercise of the license privileges authorized to be exercised at any branch office, and the violation becomes a matter of investigation, hearing, or decision by the department with relation to the license of the licensee, the department in making its ruling or decision, if the violation is found to be one committed in connection with the operation of the branch office and not a violation in connection with manufacturing or production or the manufacturing or production premises, shall not suspend, revoke, or interfere with the manufacturer’s or wine grower’s license privileges or license at his place of manufacture or production but shall limit the application of its decision, permissible under this division, to and in connection with the particular duplicate license and the premises in the operation of which the violation occurred.