ABAP System Variables

data sySY-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.There is also a predefined data type sy, which can be used instead of the data type SYST of ABAP Dictionary. The table below shows the system fields which can be used in ABAP