Essential Debug loggers for WSO2 Identity Server When you are working with WSO2 products, you have to enable debug logs to investigate issues. Its better to enable debug logs only for particular module that you need to investigate. It reduce debug writing time and unnecessary debug reading time.So you can easily understand the root cause when you are reading the console.I'm going to discuss about debug lines one by one. You have to add debug line to [WSO2_HOME]\repository\conf\log4j.properties file, all debug lines are displayed in the console and write to the wso2carbon.log file. To enable loggers for user core.This is helpful to investigate user related issues. log4j.logger.org.wso2.carbon.user.core=DEBUG To enable debug logs for identity module. This debug log will be helpful to investigate identity related issues. log4j.logger.org.wso2.carbon.identity=DEBUG If you need to investigate saml assertion or assertion related issue, you can enable debug