What West Marine expects in the 856
West Marine trades on X12 4010 over AS2. Beyond the base standard, watch these:
How EDISQ maps it
The certified West Marine 856 map loads when you enable the partner — fields auto-map from NetSuite, QuickBooks, Dynamics, and 33 other systems, validation runs against West Marine's spec before transmission, and the sandbox replays West Marine test scenarios until everything passes.
Common rejection reasons
Nearly all 856 rejections trace to reference data, not syntax: identifiers that don't match West Marine's cross-references, echoed fields dropped from the original PO, or timing that misses the program window. EDISQ flags each before West Marine ever sees the document.
Sample West Marine 856
A representative 856 interchange addressed to West Marine — envelope, shipment→order→pack→item hierarchy, and control totals:
1ISA*00* *00* *ZZ*ACMESUPPLY *ZZ*WESTMARINE *260101*1200*U*00401*000000001*0*P*>~ 2GS*SH*ACMESUPPLY*WESTMARINE*20260101*1200*1*X*004010~ 3ST*856*0001~ 4BSN*00*SHIP0001*20260101*1200*0001~ 5HL*1**S~ 6TD1*CTN25*3****G*180*LB~ 7TD5*B*2*UPSN*M~ 8REF*BM*BOL000123~ 9DTM*011*20260105~ 10N1*ST*WEST MARINE DC 5093*92*5093~ 11HL*2*1*O~ 12PRF*PO12345~ 13HL*3*2*P~ 14MAN*GM*00000123450000000017~ 15HL*4*3*I~ 16LIN**UP*012345678905~ 17SN1**24*EA~ 18CTT*4~ 19SE*17*0001~ 20GE*1*1~ 21IEA*1*000000001~
FAQ
Which 856 version does West Marine use?
X12 4010, delivered over AS2. The certified map tracks West Marine's current companion guide.
How do I test a West Marine 856?
The sandbox generates realistic West Marine 856 scenarios against your live mapping — free, unlimited, invisible to West Marine.
What does it cost?
Per document only: first 25/month free, then from $0.50, decreasing with volume. No partner or mapping fees.