Hi
Rather than doing this :
LOOP AT it_tline INTO wa_tline.
CASE sy-tabix.
WHEN 1.
gw_final-line1 = wa_tline-tdline.
WHEN 2.
gw_final-line2 = wa_tline-tdline.
WHEN 3.
gw_final-line3 = wa_tline-tdline.
WHEN 4.
gw_final-line4 = wa_tline-tdline.
ENDCASE.
ENDLOOP.
You can :
LOOP AT it_tline INTO wa_tline.
gw_final-line1 = wa_tline-tdline.
append wa_final to gw_final.
clear wa_final .
gw_final-line1 = wa_tline-tdline.
append wa_final to gw_final.
clear wa_final .
gw_final-line1 = wa_tline-tdline.
append wa_final to gw_final.
clear wa_final .
gw_final-line1 = wa_tline-tdline.
append wa_final to gw_final.
clear wa_final .
ENDLOOP.
Regards
Vaibhav Juneja