It's a meeting of all NSA's of SCO member countries. Pakistan should understand that there is a time and place for their rhetoric on Kashmir.Interesting, that India sent its NSA to a SCO meeting instead of a minister or secretary.
Still, Pakistan is desperate for diplomatic support of its failing Kashmir policy, and is raising the issue in every forum possible. UAE and Bahrain recognizing Israel helps India immensely on this front.
They did the same with SAARC PM's meet on Covid. Most other countries on the SAARC, SCO are not bothered about Kashmir and SCO forum itself is for political, economic and security cooperation among member countries. Not for indulging in petty politics. Pakistan will loose respect with such antics.