Part 4.5 ST - Transaction Set Header

ST - Transaction Set Header

• A series of segments that define a transaction is Transaction envelope.
• It is the First Segment in an EDI Document.
• The maximum number of transaction sets in an interchange is 99,999.
• It has 2 elements with 17 bytes (varies).

List of ST Element

1. Element 1 - Transaction Set Identifier Code (850 - PO (GS 1st Element) - Purchase Order).
2. Element 2 - Transaction Set Control Number.
• It will have to match SE 2nd Elements.