I have added these two directives %k and %L on the apache httpd.conf configuration file. LogFormat "%{X-Forwarded-For}i %l %u %t %k %L %{msec_frac}t \"%r\" %>s %b %D \"%{Referer}i\" \"%{User-Agent}i\" %I %O %h %{JSESSIONID}C" combinedio I see the following issues in the tomcat logs: 10.0.0.0 - - [03/Mar/2022:00:00:00 -0500] ???k??? ???L??? POST /someservice/SetData HTTP/1.1 200 58 249 - 10.0.0.0 - - [03/Mar/2022:00:00:00 -0500] ???k??? ???L??? POST /someservice/SetData HTTP/1.1 200 58 247 - 10.0.0.0 - - [03/Mar/2022:00:00:00 -0500] ???k??? ???L??? POST /someservice/SetData HTTP/1.1 200 58 250 - 10.0.0.0 - - [03/Mar/2022:00:00:00 -0500] ???k??? ???L??? POST /someservice/SetData HTTP/1.1 200 58 249 - 10.0.0.0 - - [03/Mar/2022:00:00:00 -0500] ???k??? ???L??? GET Am I doing something wrong or is there any version I have to update? The tomcat version is tomcat-7.0.76-16.el7_9.noarch. Or those switches are being retired? I followed the documentation from https://httpd.apache.org/docs/2.4/mod/mod_log_config.html