Segment: ACK Line Item Acknowledgment
Position: 270
Loop: ACK Optional (Must Use)
Level: Detail
Usage: Optional (Must Use)
Max Use: 1
Purpose: To acknowledge the line item status, it's promise ship date, a part number change, a substituted item or an item's backorder status.
Syntax Notes: 1 If ACK04 is present, then ACK05 is required.
  2 If either ACK02 or ACK03 is present, then the other is required.
  3 If either ACK07 or ACK08 is present, then the other is required.
Semantic Notes:
Comments: 1 recommends sending the Promise Ship Date in ACK05.
Notes:   Example: 
ACK*IC***079*19990712**VN*BRAND OR LABEL! 
ACK*IS***079*19990712**VN*BRAND OR LABEL!
Data Element Summary 
  Ref. Data
  Des. Element Name Attributes
M ACK01 668 Line Item Status Code M ID 2/2
  Code specifying the action taken by the seller on a line item requested by the buyer
  BP    Item Accepted - Partial Shipment, Partial Backordered
  DR    Item Accepted - Date Rescheduled
  IA    Item Accepted
  IB    Item Backordered
  IC    Item Accepted - Changes Made
  (Part Number Change only)
  ID    Item Deleted
  IH    Item on Hold
  IS    Item Accepted - Substitution Made
  ACK02 380 Quantity X R 1/10
  Numeric value of quantity
    Backordered Quantity 
Used when ACK01 = 'BP' or 'IB'
  ACK03 355 Unit or Basis for Measurement Code X ID 2/2
  Code specifying the units in which a value is being expressed, or manner in which a measurement has been taken
    Unit of measure associated to the backorder quantity in ACK02. 
Used when ACK01 = 'BP' or 'IB'
  Refer to 004010 Data Element Dictionary for acceptable code values.
  ACK04 374 Date/Time Qualifier O ID 3/3
  Code specifying type of date or time, or both date and time
    To indicate the type of date. 
Used when ACK01 = 'BP', 'DR', 'IA', 'IB', 'IC', 'IH', or 'IS'
  079    Promised for Shipment
  ACK05 373 Date X DT 8/8
  Date expressed as CCYYMMDD
    The promised ship date of the item being acknowledged. 
Used when ACK01 = 'BP', 'DR', 'IA', 'IB', 'IC', 'IH', or 'IS'
  ACK07 235 Product/Service ID Qualifier X ID 2/2
  Code identifying the type/source of the descriptive number used in Product/Service ID (234)
    Used when ACK01 = 'IC' or 'IS'  
  VN    Vendor's (Seller's) Item Number
  ACK08 234 Product/Service ID X AN 1/30
  Identifying number for a product or service
    The changed or substituted vendor part number. 
Used when ACK01 = 'IC' or 'IS'
855I4010 (004010) November 3, 1999