BCH
Beginning Segment for Purchase Order Change .
Pos: 020 Max: 1
Heading - Mandatory
Loop: N/A Elements: 16
.

To indicate the beginning of the Purchase Order Change Transaction Set and transmit identifying numbers and dates Element Summary:

                     
  _Ref_ Id _________Element Name__________ Req Type Min/Max ___Usage___  
  BCH01 353 Transaction Set Purpose Code M ID 2/2 Must use  
      Description: Code identifying purpose of transaction set
      All valid standard codes are used.
  BCH02 92 Purchase Order Type Code M ID 2/2 Must use  
      Description: Code specifying the type of Purchase Order
      All valid standard codes are used.
  BCH03 324 Purchase Order Number M AN 1/22 Must use  
      Description: Identifying number for Purchase Order assigned by the orderer/purchaser
  BCH04 328 Release Number O AN 1/30 Used  
      Description: Number identifying a release against a Purchase Order previously placed by the parties involved in the transaction
  BCH05 327 Change Order Sequence Number O AN 1/8 Used  
      Description: Number assigned by the orderer identifying a specific change or revision to a previously transmitted transaction set
  BCH06 373 Date M DT 8/8 Must use  
      Description: Date expressed as CCYYMMDD
  BCH07 326 Request Reference Number O AN 1/45 Used  
      Description: Reference number or RFQ number to use to identify a particular transaction set and query (additional reference number or description which can be used with contract number)
  BCH08 367 Contract Number O AN 1/30 Used  
      Description: Contract number
  BCH09 127 Reference Identification O AN 1/30 Used  
      Description: Reference information as defined for a particular Transaction Set or as specified by the Reference Identification Qualifier
  BCH10 373 Date O DT 8/8 Used  
      Description: Date expressed as CCYYMMDD
  BCH11 373 Date O DT 8/8 Used  
      Description: Date expressed as CCYYMMDD
  BCH12 1166 Contract Type Code O ID 2/2 Used  
      Description: Code identifying a contract type
      All valid standard codes are used.
  BCH13 786 Security Level Code O ID 2/2 Used  
      Description: Code indicating the level of confidentiality assigned by the sender to the information following
      All valid standard codes are used.
  BCH14 587 Acknowledgment Type O ID 2/2 Used  
      Description: Code specifying the type of acknowledgment
      All valid standard codes are used.
  BCH15 640 Transaction Type Code O ID 2/2 Used  
      Description: Code specifying the type of transaction
      All valid standard codes are used.
  BCH16 1232 Purchase Category O ID 2/2 Used  
      Description: Code identifying the broad category of products or services being acquired
      All valid standard codes are used.

Semantics:
06. BCH06 is the date assigned by the purchaser to purchase order.
09. BCH09 is the seller's order number.
10. BCH10 is the date assigned by the sender to the acknowledgment.
11. BCH11 is the date of the purchase order change request.

Transaction Set
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