Hi Joao,
IF so_konzs IS NOT INITIAL.
SELECT * INTO TABLE gt_lfa1 FROM lfa1 WHERE konzs IN so_konzs.
ENDIF.
IF so_konzs[] IS NOT INITIAL. " Write the [ ] along with internal table
SELECT * INTO TABLE gt_lfa1 FROM lfa1 WHERE konzs IN so_konzs.
ENDIF.
Because when u create the Select option it automatically create workarea for the same name same name with the internal table name. so with internal table write the explicitly [ ] along with the internal table.
Regards.
Nishant Bansal.