Table list used by SAP ABAP Table USR21 (User Name/Address Key Assignment)
SAP ABAP Table USR21 (User Name/Address Key Assignment) 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)