Datasys

data syThere 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 ABAPList level of the list that is currently being created (basic list: 0, details lists: greater than 0). For every interactive list event, sy-lsind is automatically increased by an increment of 1. sy-lsind can only be changed in ABAP programs for navating