I have internal table like below.
Month number Index
-----------------------------------
1 5
1 6
2 3
---------------------------------------
Now I want to add index based on month. The result will like below
Month number Index
-----------------------------------
1 5 1
1 6 2
2 3 1
---------------------------------------
I want to use loop group to implement.
The code is like below.
loop at itab into data(wa)
location = sy-tabix.
loop at group wa into data(wa1)
wa1-index = sy-tabix - location.
modify itab from wa1.
endloop.
end loop.
But the modify line has error like
"DELETE itab." 和 "MODIFY itab FROM wa." can't use in "LOOP AT itab ... USING KEY keyname ..." <br>
Then what's the correct syntax to write back to the itab? Thx.