Good day @s.sharma89 ,
We need some more log information.It will be nice to increase the debug level, have a look at the current S4-Connector replication status, and then post the result.
# ucr set connector/debug/level=4
# /etc/init.d/univention-s4-connector restart
# less /var/log/univention/connector-s4.log.
# less /var/log/univention/connector-s4-starus.log
The debug level should be reset to the default after the log information
has been collected.
# ucr set connector/debug/level=2
# /etc/init.d/univention-s4-connector restart
Regards
Anna Takang