I already noticed that there is no historical information on the user's first and last name.
The following program (used in conjunction with the change documents reports in transaction SUIM to find date ranges) can assist you in resolving the names assigned to a user ID.
report zaddresslookup. data: wa_adr7 type adr7. data: wa_adrp type adrp. data: i_adr7 type adr7 occurs 0. parameters: uname like usr02-bname obligatory. select * from adr7 into table i_adr7 where uname = uname. loop at i_adr7 into wa_adr7.. select single * from adrp into wa_adrp where persnumber = wa_adr7-persnumber. if sy-subrc = 0. write:/ wa_adr7-uname, wa_adr7-persnumber, wa_adrp-name_last, wa_adrp-name_first. endif. endloop.
This was first published in March 2006