How to disable logging by the service to the messages log?

Question

CentOS

Good day! There is a service concocted from a sh file that starts a chain of actions, including keeping its own log. The problem is that if you start the service via systemctl start, then the entire log is added to the Messages file and no own logs are kept in the specified folder. how can this be corrected?

the service is set up like this

[Unit]
Description=AccountServer

[Service]
Type=simple
ExecStart=/home/server/server_bin/accountServer/startAccountServer.sh
Restart=on-failure
RestartSec=5

[Install]
WantedBy=multi-user.target

Answer 1

Redirect the logs by the filter to the rsyslog file you need.
Or understand why the service does not keep logs in a separate file.

Answer 2

IMHO, strange.
And what is written in home/server/server_bin/accountServer/startAccountServer.sh, how do we write to the log file?