The ETL_BUILTIN_TOMCAT variable specifies the type of Tomcat (internal or external) used for the ETL service.
true or false
true
If ETL_BUILTIN_TOMCAT=true, the internal Tomcat is used for the ETL service. If the token is set to false, it is mandatory to specify the home directory of the Tomcat's install directory in the token EXTERNAL_TOMCAT_INSTALL_DIR