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