New SSR devices were not showing as connected in the MIST portal. The device ztp was not working.
The device are running version 5.4.4. Device was receiving dhcp IP in the WAN interface. However the connection to MIST cloud was broken with following logs
INF Failed to identify environment. err:getRedirectEnvFromCloud(P) failed! err: x509: certificate signed by unknown authority
getRedirectEnvFromCloud(G) failed! err: x509: certificate signed by unknown authority
The Firewall connected between the SSR and MIST cloud had policy to decrypt SSL traffic. Once the same was disable, the connection from device to the MIST portal successfully established.