CALL FUNCTION 'UNIT_CONVERSION_SIMPLE'
EXPORTING
input = wa_all-btgew
round_sign = 'X'
unit_in = 'G'
unit_out = 'KG'
IMPORTING
output = wa_all-btgew
EXCEPTIONS
conversion_not_found = 01
division_by_zero = 02
input_invalid = 03.