855 Purchase Order Acknowledgment
Verizon · X12 004010
Verizon’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
15 of 15 segments
HEADING
ST
Transaction Set Header ST
pos 010
Optional
max —
BAK
Beginning Segment For Purchase Order Acknowledgment BAK
pos 020
Required
max —
REF
Reference Identification REF
pos 050
Optional
max —
PER
Administrative Communications Contact PER
pos 060
Optional
max 3
N1 LoopShip Fromvariant 1 of 2
N1
Name N1
pos 300
Required
max —
N3
Address Information N3
pos 320
Optional
max 2
N4
Geographic Location N4
pos 330
Optional
max —
N1 LoopShip Tovariant 2 of 2required
N1
Name N1
pos 300
Required
max —
N3
Address Information N3
pos 320
Optional
max 2
N4
Geographic Location N4
pos 330
Optional
max —
DETAIL
PO1 Looprepeats 100000required
PO1
Baseline Item Data PO1
VERIZON requires the Buyer's Part Number (BP) be transmitted in each PO1 segment. Without this product ID, VERIZON cannot match the Purchase Order Acknowledgment with the original Purchase Order.
pos 010
Required
max —
PO3
Additional Item Detail PO3
pos 030
Optional
max 25
ACK Looprepeats 104required
ACK
Line Item Acknowledgment ACK
pos 270
Required
max —
SUMMARY
CTT Looprepeats 1
CTT
Transaction Totals CTT
pos 010
Required
max —
SE
Transaction Set Trailer SE
pos 030
Optional
max —
Validate a 855
Paste or upload a document and check it against Verizon’s published rules — segment order and repetition, required elements, field lengths, data types and accepted codes. Nothing is stored.
Go live on Verizon’s 855 in days, not months
Weredi maps this guide to your ERP, runs the test cycle with Verizon, and keeps the spec current as it changes.