The Topco 850 Purchase Order, explained

What Topco expects in the 850

Topco trades on X12 4010 over AS2. Beyond the base standard, watch these:

How EDISQ maps it

The certified Topco 850 map loads when you enable the partner — fields auto-map from NetSuite, QuickBooks, Dynamics, and 33 other systems, validation runs against Topco's spec before transmission, and the sandbox replays Topco test scenarios until everything passes.

Common rejection reasons

Nearly all 850 rejections trace to reference data, not syntax: identifiers that don't match Topco's cross-references, echoed fields dropped from the original PO, or timing that misses the program window. EDISQ flags each before Topco ever sees the document.

Sample Topco 850

A representative 850 interchange addressed to Topco — envelope, body segments, and control totals:

1ISA*00*          *00*          *ZZ*ACMESUPPLY     *ZZ*TOPCO          *260101*1200*U*00401*000000001*0*P*>~
2GS*PO*ACMESUPPLY*TOPCO*20260101*1200*1*X*004010~
3ST*850*0001~
4BEG*00*SA*PO12345**20260101~
5REF*DP*056~
6DTM*002*20260110~
7N1*ST*TOPCO 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