what is SY-DATUM

data syI am a quantitative psychologist with expertise in (1) dynamic modeling, particularly methodologies for handling intensive longitudinal data.List 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