What Topco expects in the 855
Topco trades on X12 4010 over AS2. Topco's 855 follows the standard X12 layout — no partner-specific companion-guide quirks are curated for this document yet. The certified base map covers the standard requirements, and validation still runs against the 855 spec before anything transmits.
How EDISQ maps it
The certified Topco 855 map loads when you enable the partner — fields auto-map from NetSuite, QuickBooks, Dynamics, and 33 other systems, validation runs against Topco's spec before transmission, and the sandbox replays Topco test scenarios until everything passes.
Common rejection reasons
Nearly all 855 rejections trace to reference data, not syntax: identifiers that don't match Topco's cross-references, echoed fields dropped from the original PO, or timing that misses the program window. EDISQ flags each before Topco ever sees the document.
Sample Topco 855
A representative 855 interchange addressed to Topco — envelope, body segments, and control totals:
1ISA*00* *00* *ZZ*ACMESUPPLY *ZZ*TOPCO *260101*1200*U*00401*000000001*0*P*>~ 2GS*PR*ACMESUPPLY*TOPCO*20260101*1200*1*X*004010~ 3ST*855*0001~ 4BAK*00*AC*PO12345*20260101~ 5PO1*1*24*EA*9.75**UP*012345678905~ 6ACK*IA*24*EA~ 7PO1*2*12*EA*14.50**UP*012345678912~ 8ACK*IA*12*EA~ 9CTT*2~ 10SE*8*0001~ 11GE*1*1~ 12IEA*1*000000001~
FAQ
Which 855 version does Topco use?
X12 4010, delivered over AS2. The certified map tracks Topco's current companion guide.
How do I test a Topco 855?
The sandbox generates realistic Topco 855 scenarios against your live mapping — free, unlimited, invisible to Topco.
What does it cost?
Per document only: first 25/month free, then from $0.50, decreasing with volume. No partner or mapping fees.