data syWhen the sy function is executed, the software generates the appropriate function call in the ABAP for the ABAP data flow (appends SY-to the SAP_variable > that you specify)SY-DATUM and the system fields for the local time zone, that is SY-TIMLO, SY-DATLO, and SY-ZONLO are also reset. SY-DATLO Local date of user, for example 19981129, 19990628.