Here we would like to draw your attention to SM30_CUS_SYST 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).SM30_CUS_SYST is a transaction code used for Maintain Table CUS_SYST in SAP.
It comes under the package S_PROFGEN.
Transaction SM30_CUS_SYST technical data table
|Purpose||Maintain Table CUS_SYST|