Table list used by SAP ABAP Table USR21S (Shadow table: Assignment of user name to address key)
SAP ABAP Table USR21S (Shadow table: Assignment of user name to address key) is using
# Object Type Object Name Object Description Note
     
1 Table  ADRC Addresses (Business Address Services)
2 Table  ADRP Persons (Business Address Services)
3 Table  USR02 Logon Data (Kernel-Side Use)