ABAP System Fields - ABAP Keyword Documentation -

data sy The structure sy can also be addressed using syst. There is also a predefined data type sy, which can be used instead of the data type SYST of ABAP Dictionary.. I am a quantitative psychologist with expertise in (1) dynamic modeling, particularly methodologies for handling intensive longitudinal data.

data toto china, Internal system fields are intended purely for internal use in the ABAP runtime framework and in the kernel. They must never be overwritten in an ABAP program and they should not be.