An issuer or its guarantor must appoint and maintain a paying agent and/or, where appropriate, a registrar in Hong Kong until the date on which no listed debt security is outstanding, unless the issuer itself performs these functions. Such paying agent must provide facilities for obtaining new debt securities, in accordance with the terms and conditions of the debt securities, to replace those debt securities which have been damaged, lost, stolen or destroyed and for all other purposes provided for in the terms and conditions of the debt securities.