Transaction Set Header

Pos: 010

Max: 1

Heading - Mandatory

Loop: N/A

Elements: 2

User Option (Usage): Must use

To indicate the start of a transaction set and to assign a control number

Element Summary:

	Ref	Id	Element Name	Req	Type	Min/Max	Usage	Rep
	ST01	143	Transaction Set Identifier Code	M	ID	3/3	Must use	1

	Code	Name
	855	Purchase Order Acknowledgment

ST02

329

Transaction Set Control Number

4/9

Must use

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