Hi Nalini,
DATA: lv_lines TYPE i,
lv_len TYPE i.
*_ If you know your line length
lv_lines = lines( git_final ).
lv_len = lv_lines * LINE_LENGTH.
OR
*_ If you dont know your line length
LOOPAT git_final ASSIGNING<field_symbol>.
lv_len = lv_len + xstrlen(<field_symbol>).
ENDLOOP.
Hope it helps. Cheers!