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