Here we would like to draw your attention to SU99 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).SU99 is a transaction code used for Call report RSUSR008 in SAP.
It comes under the package SUSR.
Transaction SU99 technical data table
|Purpose||Call report RSUSR008|