msdn link

The SAMPR_DOMAIN_DISPLAY_OEM_USER structure contains a subset of user account information sufficient to show a summary of the account for an account management application. This structure exists to support non–Unicode-based systems.

 typedef struct _SAMPR_DOMAIN_DISPLAY_OEM_USER {
   unsigned long Index;
   RPC_STRING OemAccountName;
 } SAMPR_DOMAIN_DISPLAY_OEM_USER,
  *PSAMPR_DOMAIN_DISPLAY_OEM_USER;

For information on each field, see section 2.2.8.1.