The Exchange may raise any enquiries or call for any information or documentation in connection with any listing application. Both the Sponsor and the issuer in question are required to respond in a prompt and efficient manner to all such enquiries raised and the issuer shall not (save, in the case of a new applicant, for the express purposes set out in rule 12.15) publish or issue any listing document (if any) until the Exchange confirms that it has no further comments thereon.