Service of notice sets permitted delivery methods and establishes when statutory communications are deemed effective. Provision prescribes permissible methods for serving statutory communications, including personal delivery, messenger, authorised representative, registered or speed post with acknowledgement, courier, email to the registered address, availability on the common portal, publication in a local newspaper, and, if practicable methods fail, affixation at the last known business or residence or on the issuing office's notice board. Deemed service occurs on the date of tender, publication or affixation, and communications by registered or speed post are deemed received after the normal transit period unless disproved.