Here we would like to draw your attention to ST01 transaction code in SAP. As we know it is being used in the SAP BC-CST (Client/Server Technology in Basis) component which is coming under BC module (BASIS).ST01 is a transaction code used for System Trace in SAP.
It comes under the package STRC.When we execute this transaction code, RSTRAC25 is the normal standard SAP program that is being executed in background.
SAP ST01 menu path
See the possible menu paths to access the same report by avoiding entering the transaction code.
Tools → Administration → Monitor → Traces → System Trace
Transaction ST01 technical data table