Populating deep structure
*--Project Checklist LOOP AT <lfs_projects>-checklists INTO ls_checklist. LOOP AT ls_checklist-checklistitems INTO ls_checklist_itm. LOOP AT ls_checklist_itm-tasks ASSIGNING <lfs_tasks>. PERFORM convert_unit CHANGING <lfs_tasks>-taskdata-duration_unit. LOOP AT <lfs_tasks>-relationships ASSIGNING <lfs_rel>. PERFORM convert_unit CHANGING <lfs_rel>-lag_unit. ENDLOOP. ENDLOOP. ...