Here we would like to draw your attention to SM21 transaction code in SAP. As we know it is being used in the SAP BC-CCM (Use Subcomponents in Basis) component which is coming under BC module (BASIS).SM21 is a transaction code used for system log in SAP.
It comes under the package SYSLOG.When we execute this transaction code, RSYSLOG is the normal standard SAP program that is being executed in background.
SAP SM21 menu path
See the possible menu paths to access the same report by avoiding entering the transaction code.
Tools → ABAP Workbench → Test → System Log
Tools → Administration → Monitor → Performance → Exceptions/Users → Exceptions → System Log
Tools → Administration → Monitor → System Log
Tools → CCMS → Control/Monitoring → Performance → Exceptions/Users → Exceptions → System Log
Transaction SM21 technical data table