In charging any person in an affidavit, information, or indictment with a violation of conducting, without a license or pursuant to an exemption of this chapter, any activity for which a license or an exemption therefor is required, it shall be sufficient to charge that the person did, upon a certain day and in certain county, engage in such activity and that such person did not have a license or exemption to do so. No further facts need to be averred concerning the matter.