New configuration parameters have been added in 15.0.2. If a downgraded server is booted using the 15.0.2 configuration file, the new options will cause the message ‘Unknown parameter’ the unknown option will be reported the first time the server is booted. These messages can be ignored because the configuration file will be rewritten without the unknown options.Running the 15.0 or 15.0.1 version of installmaster removes configuration parameters that belong to 15.0.2, by deleting sysconfigures rows for configuration parameters that do not exist in syscurconfigs. After running installmaster the error messages will no longer appear when you start the server.
