How do i identify the level of an ALV list. For eg. If I am using OO concepts to develop the ALV report and if I code a drilldown report, if the secondary list is generated then how or which variable do i use to identify the level of the secondary list ?
As an example, in interactive reports, sylsind is used to identify the list index. What is the method to identify the ALV drilldown list index using OO concepts ?