Here we would like to draw your attention to SU3_OLD transaction code in SAP. As we know it is being used in the SAP BC-SEC (Security in Basis) component which is coming under BC module (BASIS).SU3_OLD is a transaction code used for Maintain Users Own Data in SAP.
It comes under the package SUSR.When we execute this transaction code, SAPMSUU0O_OLD is the normal standard SAP program that is being executed in background.
Transaction SU3_OLD technical data table
|Purpose||Maintain Users Own Data|