EDI X12 Schema notes - 850 PO

• Interchange (Envelope) ISA

• Auth. Qualifier	Text	2
  Auth. Information	Text	10
  Security Qualifier	Text	2
  Security Information	Text	10
  Int. Sender ID Qualifier	Text	2
  Int. Sender ID	Text	15
  Int. Receiver ID Qualifier	Text	2
  Int. Receiver ID	Text	15
  Int. Control Stds. Identifier	Text	1
  Int. Control Version	Text	5
  Int. Control Number ID	Text	9
  Acknowledgement Requested	Text	1
  Usage Indicator	Text	1
  Component Element Separator	Text	1

• Functional Group (Transaction Batch) GS

• Functional Identifier Code	Text	2
  App. Sender Code	Text	15
  App. Receiver Code	Text	15
  Date	Text	8
  Time	Text	8
  Group Control Number	Text	1
  Responsible Agency Code	Text	1
  Version	Text	6

• Purchase Order (Transaction) ST
• BEG
• REF
• Addresses
• Lines (Transaction Lines)