Loop and read issue

Hi Experts
I am trying to do basically as shown below
LOOP AT T_EDID4 INTO WA_EDID4 WHERE DOCNUM = T_EDIDC-DOCNUM .
READ TABLE T_EDID4 WITH KEY DOCNUM = T_EDIDC-DOCNUM
SEGNAM = 'E1KNVVM'
if sy-subrc eq 0 .
endif.
endlloop.
If there are more than 1 E1KNVVM for idoc number , how can i make sure not to read the segnam which has already been read

Sanju,
While extracting the data into T_EDID4 take the data of "SEGNUM" column from EDID4 table.
SORT : T_EDIDC BY DOCNUM,
            T_EDID4 BY DOCNUM SEGNAM SEGNUM.
LOOP AT T_EDIDC.
   LOOP AT T_EDID4 INTO WA_EDID4 WHERE DOCNUM = T_EDIDC-DOCNUM
                                                             AND   SEGNAM = 'E1KNVVM'
                                                             AND   SEGNUM = T_EDID4-SEGNUM.
      if sy-subrc eq 0 .
       endif.
endlloop.
Don't forget to reward if useful...

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