It shall be unlawful for any peddler, itinerant merchant, or solicitor to engage in any activity for which a permit is required by this chapter, unless he carries such permit on his or her person while so engaged. Every peddler, itinerant merchant, or solicitor shall display his or her permit upon request of any person and failure to so display such permit shall be grounds for revocation and shall constitute a violation of this chapter.
Penalty, see § 112.99