What Core-Mark expects in the 850
Core-Mark trades on X12 4010 over AS2. Beyond the base standard, watch these:
How EDISQ maps it
The certified Core-Mark 850 map loads when you enable the partner — fields auto-map from NetSuite, QuickBooks, Dynamics, and 33 other systems, validation runs against Core-Mark's spec before transmission, and the sandbox replays Core-Mark test scenarios until everything passes.
Common rejection reasons
Nearly all 850 rejections trace to reference data, not syntax: identifiers that don't match Core-Mark's cross-references, echoed fields dropped from the original PO, or timing that misses the program window. EDISQ flags each before Core-Mark ever sees the document.
Sample Core-Mark 850
A representative 850 interchange addressed to Core-Mark — envelope, body segments, and control totals:
1ISA*00* *00* *ZZ*ACMESUPPLY *ZZ*COREMARK *260101*1200*U*00401*000000001*0*P*>~ 2GS*PO*ACMESUPPLY*COREMARK*20260101*1200*1*X*004010~ 3ST*850*0001~ 4BEG*00*SA*PO12345**20260101~ 5REF*DP*056~ 6DTM*002*20260110~ 7N1*ST*CORE-MARK DC 5093*92*5093~ 8PO1*1*24*EA*9.75**UP*012345678905~ 9PID*F****ACME WIDGET 24CT~ 10PO1*2*12*EA*14.50**UP*012345678912~ 11PID*F****ACME GADGET 12CT~ 12CTT*2~ 13SE*11*0001~ 14GE*1*1~ 15IEA*1*000000001~
FAQ
Which 850 version does Core-Mark use?
X12 4010, delivered over AS2. The certified map tracks Core-Mark's current companion guide.
How do I test a Core-Mark 850?
The sandbox generates realistic Core-Mark 850 scenarios against your live mapping — free, unlimited, invisible to Core-Mark.
What does it cost?
Per document only: first 25/month free, then from $0.50, decreasing with volume. No partner or mapping fees.