Volkan, Perhaps you could look at https://stackoverflow.com/questions/66660379/jsontemplatelayout-can-log-level-be-converted-to-lower-case <https://stackoverflow.com/questions/66660379/jsontemplatelayout-can-log-level-be-converted-to-lower-case>. I don’t know that answer to this. You might also want to look at https://stackoverflow.com/questions/66714357/exclude-empty-fields-from-log4j2-jsontemplatelayout-output <https://stackoverflow.com/questions/66714357/exclude-empty-fields-from-log4j2-jsontemplatelayout-output>.
Ralph