Segment

A segment is a group of the previously discussed elements within a given EDI record. Segments are most commonly identified with a 2 or 3 letter designation, such as GS or ISA. However, some segments are identified with a letter and a number, like N1 or N3. In this purchase order example, all segments except the first follow a delimiter of ~, which signifies the end of the previous segment. All segments terminate where the next segment commences.

ISA*00*          *00*          *08*6120930000     *12*9197472911     *06071
0*192
5*U*00401*000000258*0*P*<~
GS*PO*6120930000*9197472911*20060710*1925*258*X*004010~
ST*850*2580001~
BEG*00*SA*1005061183**20060710~
REF*IA*513141~
CSH*N~
SAC*N**VI*OHNS~
ITD*08**1.000**10**30*****1.000 % 10 Net 30~
DTM*001*20060729~
DTM*010*20060722~
N1*BY*TSC*92*1113~
N3*115 GREYSTONE POWER BOULEVARD~
N4*D
ALLAS*GA*30157~
PO1*10*12*EA*3.14**IN*2405670*VN*1057*UP*023851010578~
CTT*1~
SE*14*2580001~
GE*1*258~
IEA*1*000000258~

  • The designation ISA signifies the start of its respective segment, which may include any given number of elements depending on the segment in question.
  • The GS segment, as all others except the first, follows the delimiter of ~

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