Post-issue reporting requirement: lead managers must file the final report and due diligence certificate within seven days of allotment. The lead manager(s) must submit a final post-issue report on the lines of Parts A of Schedule XVII, along with a due diligence certificate as per the format of Form F of Schedule V, within seven days of finalisation of the basis of allotment, or within seven days of refund of money in case of failure of issue.