SAP SYSTEM FIELDS GUIDL documentation, setup help and example usage

System Fields
An ABAP program can request the status of the ABAP runtime environment using the system fields . From a technical viewpoint, these system fields are a set of predefined variables - the components of the predefined sy structure of data type SYST from the ABAP Dictionary - that are always available while the program is running.
The system field sy-repid is an exception. This field indicates the name of the program currently running. In this case, we are dealing with a predefined constant and not a component of the predefined sy
structure.

Access

Obsolete and internal system fields

Evaluation

Return value

Use as current parameter

Using system fields on the user interface

Use in operand positions

Documentation extract taken from SAP system, � Copyright SAP AG. All rights reserved