USREXTIDMAP is an SAP Structure so does not store data like a database table does but can be used to process "Assignment of External ID to Users" Information within sap ABAP programs. This is done by declaring abap internal tables, work areas or database tables based on this Structure. These can then be used to store and process the required data appropriately.
i.e. DATA: wa_USREXTIDMAP TYPE USREXTIDMAP .
Below is the documentation avaialable and full details of the fields which make up this Structure.
|Data Type||length (Decimals)||Check table||Description||Conversion Routine|
|User Name in User Master Record|
USREXTIDMAP - Assignment of External ID to Users USREXTIDH - External ID (Access Using Hash Value) USREXTID - Assignment of External ID to Users USREL__U - User Administration: User in Relationship USREL__S - User Administration: System in Relationships USREL__A - User Administration: System - Activity Group