A broker shall not conclude any deal in securities before verifying that the relevant share certificate is in the possession of the holder, or his legally appointed representative. In the absence of such share certificates, the broker shall require the concerned parties to obtain a certificate from the issuer, showing the number of shares held and confirming that the share certificate is in the issuer's possession, which certificate is neither mortgaged, attached or lost, or a replacement thereof has been issued.

The broker is barred from concluding deals in disputed securities, or payment of any value of such securities before executing the selling order in the Trading Floor, in compliance with the Exchange's rules and regulations.