855 Purchase Order Acknowledgment
Chewy Pharmacy · X12 005010
Chewy Pharmacy’s 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
17 of 17 segments
HEADING
ST
Transaction Set Header ST
pos 0100
Optional
max —
BAK
Beginning Segment For Purchase Order Acknowledgment BAK
pos 0200
Required
max —
REF
Reference Information REF
One iteration of the REF segment is required for the Chewy Pharmacy internal vendor ID (REF01=IA).
pos 0500
Required
max 1
FOB
Fob Related Instructions FOB
Only send this segment if the FOB information is changing from what was sent (if sent) on the PO. Else, do not send.
pos 0800
Optional
max 1
ITD
Terms Of Sale Deferred Terms Of Sale ITD
Only send this segment if the ITD information is changing from what was sent on the PO. Else, do not send.
pos 1300
Optional
max 1
DTM
Date Time Reference DTM
Only send this segment if the ITD information is changing from what was sent on the PO. Else, do not send.
pos 1500
Optional
max 1
TD5
Carrier Details Routing Sequence Transit Time TD5
Only send this segment if the Carrier information is changing from what was sent (if sent) on the PO. Else, do not send.
pos 2400
Optional
max 1
N9 Looprepeats 1
N9
Extended Reference Information N9
pos 2800
Required
max —
MTX
Text MTX
pos 2900
Required
max 1
DETAIL
PO1 Looprepeats 100000required
PO1
Baseline Item Data PO1
The Vendor Item # (VN) is required. However, all item identifiers are recommended, specifically the GTIN.
pos 0100
Required
max —
PID Looprepeats 4required
PID
Product Item Description PID
pos 0500
Required
max —
PO4
Item Physical Details PO4
pos 0900
Optional
max —
ACK Looprepeats 10required
ACK
Line Item Acknowledgment ACK
pos 2700
Required
max —
N9 Looprepeats 1
N9
Extended Reference Information N9
pos 3500
Required
max —
MTX
Text MTX
pos 3600
Required
max 1
SUMMARY
CTT Looprepeats 1
CTT
Transaction Totals CTT
pos 0100
Required
max —
SE
Transaction Set Trailer SE
pos 0300
Optional
max —
Validate a 855
Paste or upload a document and check it against Chewy Pharmacy’s published rules — segment order and repetition, required elements, field lengths, data types and accepted codes. Nothing is stored.
Go live on Chewy Pharmacy’s 855 in days, not months
Weredi maps this guide to your ERP, runs the test cycle with Chewy Pharmacy, and keeps the spec current as it changes.