Read first row of the internal table

Dear All,
Please let me know how to read the first row of the internal table?
I used following read statement but it is not working
READ TABLE t_cdhdr INDEX 1.

Hi,
i think you are not reading an internal table
according to your code i think you are reading a type
which may be declared as types...
types are declared just for reference
eg
types: begin of t_cdhdr .
include strucuture cdhdr .
types: end of t_cdhdr .
types: t_it_cdhdr type standard table of t_cdhdr.
data: git_t_cdhdr type t_it_cdhdr.
data: gwa_t_cdhdr type t_cdhdr.
now have to fill the iternal table
and
read table git_t_cdhdr into gwa_t_cdhdr index 1.
reward points if helpful
thanks & regards,
venkatesh

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this is my code could u plz explain regarding duplicate material number .
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