The Walgreens 850 Purchase Order, explained

What Walgreens expects in the 850

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

How EDISQ maps it

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

Common rejection reasons

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

Sample Walgreens 850

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

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

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