855 Purchase Order Acknowledgment
Leslie Pools · X12 004010
Leslie Pools’ published 855 specification, rendered as an interactive guide. Expand any segment to see its elements, data types, lengths and accepted codes — then validate your own document against it below.
Specification
14 of 14 segments
HEADING
ST
Transaction Set Header
To indicate the start of a transaction set and to assign a control number
pos 010
Required
max —
BAK
Beginning Segment for Purchase Order Acknowledgment
To indicate the beginning of the Purchase Order Acknowledgment Transaction Set and
pos 020
Required
max —
CUR
Currency
To specify the currency (dollars, pounds, francs, etc.) used in a transaction
pos 040
Optional
max —
REF
Reference Identification
To specify identifying information
pos 050
Required
max —
DTM
Date/Time Reference
To specify pertinent dates and times
pos 150
Optional
max 10
N1 Looprepeats 1required
N1
Name
To identify a party by type of organization, name, and code
pos 300
Required
max —
N3
Address Information
To specify the location of the named party
pos 320
Optional
max 2
N4
Geographic Location
To specify the geographic place of the named party
pos 330
Optional
max —
DETAIL
PO1 Looprepeats 100000required
PO1
Baseline Item Data
To specify basic and most frequently used line item data
pos 010
Optional
max —
PID Looprepeats 1
PID
Product/Item Description
To describe a product or process in coded or free-form format
pos 050
Optional
max —
PO4
Item Physical Details
To specify the physical qualities, packaging, weights, and dimensions relating to the item
pos 090
Optional
max —
ACK Looprepeats 104required
ACK
Line Item Acknowledgment
To acknowledge the ordered quantities and specify the ready date for a specific line item
pos 270
Required
max —
SUMMARY
CTT Looprepeats 1
CTT
Transaction Totals
To transmit a hash total for a specific element in the transaction set
pos 010
Optional
max —
SE
Transaction Set Trailer
To indicate the end of the transaction set and provide the count of the transmitted
pos 030
Required
max —
Validate a 855
Paste or upload a document and check it against Leslie Pools’ published rules — segment order and repetition, required elements, field lengths, data types and accepted codes. Nothing is stored.
Go live on Leslie Pools’ 855 in days, not months
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