Relaxation of listing requirements allows eased enforcement for listing of debt securities from public issues and private placements. Regulation 22 relaxes strict enforcement of specified provisions of rule 19 of the Securities Contracts (Regulation) Rules, 1957 to permit listing of debt securities: it covers sub-rules (1) and (3) for public issues and private placements, and clause (b) of sub-rule (2) for private placements and for issues to the public by infrastructure companies, Government companies, statutory authorities or corporations, or special purpose vehicles engaged in the infrastructure sector, with meanings of infrastructure terms as per the Disclosure and Investor Protection Guidelines, 2000.