Here we would like to draw your attention to SU_REFUSERVARIABLE 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).SU_REFUSERVARIABLE is a transaction code used for Maintain reference user variables in SAP.
It comes under the package SUSR.
Transaction SU_REFUSERVARIABLE technical data table
|Purpose||Maintain reference user variables|