What MWI Veterinary Supply expects in the 855
MWI Veterinary Supply trades on X12 4010 over AS2. Beyond the base standard, watch these:
How EDISQ maps it
The certified MWI Veterinary Supply 855 map loads when you enable the partner — fields auto-map from NetSuite, QuickBooks, Dynamics, and 33 other systems, validation runs against MWI Veterinary Supply's spec before transmission, and the sandbox replays MWI Veterinary Supply test scenarios until everything passes.
Common rejection reasons
Nearly all 855 rejections trace to reference data, not syntax: identifiers that don't match MWI Veterinary Supply's cross-references, echoed fields dropped from the original PO, or timing that misses the program window. EDISQ flags each before MWI Veterinary Supply ever sees the document.
Sample MWI Veterinary Supply 855
A representative 855 interchange addressed to MWI Veterinary Supply — envelope, body segments, and control totals:
1ISA*00* *00* *ZZ*ACMESUPPLY *ZZ*MWIVETERINARYSU*260101*1200*U*00401*000000001*0*P*>~ 2GS*PR*ACMESUPPLY*MWIVETERINARYSU*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 MWI Veterinary Supply use?
X12 4010, delivered over AS2. The certified map tracks MWI Veterinary Supply's current companion guide.
How do I test a MWI Veterinary Supply 855?
The sandbox generates realistic MWI Veterinary Supply 855 scenarios against your live mapping — free, unlimited, invisible to MWI Veterinary Supply.
What does it cost?
Per document only: first 25/month free, then from $0.50, decreasing with volume. No partner or mapping fees.