Displaying Addresses and Other Personal Data 
Use
You can display the addresses and data, such as department and cost center, of R/3 users. You can also display external addresses that are stored in the address management of the R/3 System or in an LDAP service.

For information on changing addresses, see
Procedure
Display addresses of R/3 users
.A list of the data of all the users who meet your search criteria is displayed. You can use the list editing functions of the R/3 System. You can use the data for mail merging in Microsoft Word, for example.
Display external addresses from the R/3 address management
Find and display addresses in an external directory service (LDAP)